<?xml version='1.0' encoding='UTF-8'?>
<model name="NKE_BG_Env" xmlns="http://www.cellml.org/cellml/1.1#" xmlns:cellml="http://www.cellml.org/cellml/1.1#" xmlns:xlink="http://www.w3.org/1999/xlink">
    <units name="volt_per_sec">
        <unit exponent="-1.0" units="second"/>
        <unit units="volt"/>
    </units>
    <component name="NKE_BG_Env">
        <variable initial_value="0.0012594999999999" name="K_Ki" public_interface="out" units="per_fmol"/>
        <variable initial_value="8.314" name="R" public_interface="out" units="J_per_K_mol"/>
        <variable initial_value="310" name="T" public_interface="out" units="kelvin"/>
        <variable name="q_0_Ki" public_interface="out" units="fmol"/>
        <variable initial_value="0.0092359986984206" name="K_Ko" public_interface="out" units="per_fmol"/>
        <variable name="q_0_Ko" public_interface="out" units="fmol"/>
        <variable initial_value="0.0008351398234623" name="K_Nai" public_interface="out" units="per_fmol"/>
        <variable name="q_0_Nai" public_interface="out" units="fmol"/>
        <variable initial_value="0.0061242012945757" name="K_Nao" public_interface="out" units="per_fmol"/>
        <variable name="q_0_Nao" public_interface="out" units="fmol"/>
        <variable initial_value="2.371502339419809" name="K_ATP" public_interface="out" units="per_fmol"/>
        <variable name="q_0_ATP" public_interface="out" units="fmol"/>
        <variable initial_value="7.975992131902154e-05" name="K_ADP" public_interface="out" units="per_fmol"/>
        <variable name="q_0_ADP" public_interface="out" units="fmol"/>
        <variable initial_value="0.0456499549675699" name="K_Pi" public_interface="out" units="per_fmol"/>
        <variable name="q_0_Pi" public_interface="out" units="fmol"/>
        <variable initial_value="0.0456499549675696" name="K_H" public_interface="out" units="per_fmol"/>
        <variable name="q_0_H" public_interface="out" units="fmol"/>
        <variable initial_value="V_0" name="u_0_Vm" public_interface="out" units="volt"/>
        <variable initial_value="140" name="c_Nao" public_interface="out" units="mM"/>
        <variable initial_value="10" name="c_Nai" public_interface="out" units="mM"/>
        <variable initial_value="4.5" name="c_Ko" public_interface="out" units="mM"/>
        <variable initial_value="145" name="c_Ki" public_interface="out" units="mM"/>
        <variable initial_value="0.025" name="c_ADP" public_interface="out" units="mM"/>
        <variable initial_value="1" name="c_ATP" public_interface="out" units="mM"/>
        <variable initial_value="0.8" name="c_Pi" public_interface="out" units="mM"/>
        <variable initial_value="7.2" name="pH" public_interface="out" units="dimensionless"/>
        <!--   var c_H: mM {init: 3e-5} ;-->
        <variable initial_value="5.182" name="W_o" public_interface="out" units="pL"/>
        <variable initial_value="38.0" name="W_i" public_interface="out" units="pL"/>
        <variable name="t" public_interface="out" units="second"/>
        <math xmlns="http://www.w3.org/1998/Math/MathML">
            <apply>
                <eq/>
                <ci>q_0_Ki</ci>
                <apply>
                    <times/>
                    <ci>c_Ki</ci>
                    <ci>W_i</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_Ko</ci>
                <apply>
                    <times/>
                    <ci>c_Ko</ci>
                    <ci>W_o</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_Nai</ci>
                <apply>
                    <times/>
                    <ci>c_Nai</ci>
                    <ci>W_i</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_Nao</ci>
                <apply>
                    <times/>
                    <ci>c_Nao</ci>
                    <ci>W_o</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_ATP</ci>
                <apply>
                    <times/>
                    <ci>c_ATP</ci>
                    <ci>W_i</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_ADP</ci>
                <apply>
                    <times/>
                    <ci>c_ADP</ci>
                    <ci>W_i</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_Pi</ci>
                <apply>
                    <times/>
                    <ci>c_Pi</ci>
                    <ci>W_i</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>q_0_H</ci>
                <apply>
                    <times/>
                    <apply>
                        <power/>
                        <cn cellml:units="dimensionless">10</cn>
                        <apply>
                            <minus/>
                            <ci>pH</ci>
                        </apply>
                    </apply>
                    <cn cellml:units="mM">1000</cn>
                    <ci>W_i</ci>
                </apply>
            </apply>
        </math>
        <!-- c_H = pow(10{dimensionless}, -pH)*1000{mM};-->
        <variable initial_value="-0.085" name="V_0" units="volt"/>
        <variable initial_value="-0.0849887300013559" name="V_1" units="volt"/>
        <variable initial_value="-0.0771308499785242" name="V_2" units="volt"/>
        <variable initial_value="-0.069439543548992" name="V_3" units="volt"/>
        <variable initial_value="-0.0617823546571007" name="V_4" units="volt"/>
        <variable initial_value="-0.0540339918962018" name="V_5" units="volt"/>
        <variable initial_value="-0.0455981890205127" name="V_6" units="volt"/>
        <variable initial_value="-0.0308327809109336" name="V_7" units="volt"/>
        <variable initial_value="-0.0041200588277119" name="V_8" units="volt"/>
        <variable initial_value="0.021122935164456" name="V_9" units="volt"/>
        <variable initial_value="0.0311858329241913" name="V_10" units="volt"/>
        <variable initial_value="0.0363301878013338" name="V_11" units="volt"/>
        <variable initial_value="0.0091494325539552" name="V_12" units="volt"/>
        <variable initial_value="0.001734440704843" name="V_13" units="volt"/>
        <variable initial_value="-0.0069876187144901" name="V_14" units="volt"/>
        <variable initial_value="-0.0189741916655762" name="V_15" units="volt"/>
        <variable initial_value="-0.0329751807850325" name="V_16" units="volt"/>
        <variable initial_value="-0.0509132764051936" name="V_17" units="volt"/>
        <variable initial_value="-0.0743029578332826" name="V_18" units="volt"/>
        <variable initial_value="-0.0797210898299997" name="V_19" units="volt"/>
        <variable initial_value="-0.0827238154747979" name="V_20" units="volt"/>
        <variable initial_value="-0.085" name="V_21" units="volt"/>
        <variable initial_value="2.253999728819167e-05" name="dV_1" units="volt_per_sec"/>
        <variable initial_value="78.57880022829822" name="dV_2" units="volt_per_sec"/>
        <variable initial_value="76.91306429534913" name="dV_3" units="volt_per_sec"/>
        <variable initial_value="76.57188891889469" name="dV_4" units="volt_per_sec"/>
        <variable initial_value="77.48362760901543" name="dV_5" units="volt_per_sec"/>
        <variable initial_value="84.3580287568728" name="dV_6" units="volt_per_sec"/>
        <variable initial_value="73.82704054789968" name="dV_7" units="volt_per_sec"/>
        <variable initial_value="267.12722083215607" name="dV_8" units="volt_per_sec"/>
        <variable initial_value="252.42993992176528" name="dV_9" units="volt_per_sec"/>
        <variable initial_value="100.62897759733012" name="dV_10" units="volt_per_sec"/>
        <variable initial_value="25.721774385713967" name="dV_11" units="volt_per_sec"/>
        <variable initial_value="-1.3590377623689216" name="dV_12" units="volt_per_sec"/>
        <variable initial_value="-0.3689050671200131" name="dV_13" units="volt_per_sec"/>
        <variable initial_value="-0.4339333044444393" name="dV_14" units="volt_per_sec"/>
        <variable initial_value="-0.5963469129893535" name="dV_15" units="volt_per_sec"/>
        <variable initial_value="-0.6965666228585216" name="dV_16" units="volt_per_sec"/>
        <variable initial_value="-0.8924425681672179" name="dV_17" units="volt_per_sec"/>
        <variable initial_value="-1.1636657426910006" name="dV_18" units="volt_per_sec"/>
        <variable initial_value="-0.2695588058068203" name="dV_19" units="volt_per_sec"/>
        <variable initial_value="-0.060907213890430016" name="dV_20" units="volt_per_sec"/>
        <variable name="dV_21" units="volt_per_sec"/>
        <variable name="dV" units="volt_per_sec"/>
        <variable initial_value="0" name="t1" units="second"/>
        <variable name="t2" units="second"/>
        <variable name="t3" units="second"/>
        <variable name="t4" units="second"/>
        <variable name="t5" units="second"/>
        <variable name="t6" units="second"/>
        <variable name="t7" units="second"/>
        <variable name="t8" units="second"/>
        <variable name="t9" units="second"/>
        <variable name="t10" units="second"/>
        <variable name="t11" units="second"/>
        <variable name="t12" units="second"/>
        <variable name="t13" units="second"/>
        <variable name="t14" units="second"/>
        <variable name="t15" units="second"/>
        <variable name="t16" units="second"/>
        <variable name="t17" units="second"/>
        <variable name="t18" units="second"/>
        <variable name="t19" units="second"/>
        <variable name="t20" units="second"/>
        <variable name="T_cardiac" units="second"/>
        <variable initial_value="1.0" name="T_0" units="second"/>
        <math xmlns="http://www.w3.org/1998/Math/MathML">
            <apply>
                <eq/>
                <ci>dV_21</ci>
                <apply>
                    <divide/>
                    <apply>
                        <minus/>
                        <ci>V_21</ci>
                        <ci>V_20</ci>
                    </apply>
                    <apply>
                        <minus/>
                        <ci>T_0</ci>
                        <ci>t20</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>T_cardiac</ci>
                <apply>
                    <minus/>
                    <ci>t</ci>
                    <apply>
                        <times/>
                        <ci>T_0</ci>
                        <apply>
                            <floor/>
                            <apply>
                                <divide/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t2</ci>
                <apply>
                    <plus/>
                    <ci>t1</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_2</ci>
                            <ci>V_1</ci>
                        </apply>
                        <ci>dV_2</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t3</ci>
                <apply>
                    <plus/>
                    <ci>t2</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_3</ci>
                            <ci>V_2</ci>
                        </apply>
                        <ci>dV_3</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t4</ci>
                <apply>
                    <plus/>
                    <ci>t3</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_4</ci>
                            <ci>V_3</ci>
                        </apply>
                        <ci>dV_4</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t5</ci>
                <apply>
                    <plus/>
                    <ci>t4</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_5</ci>
                            <ci>V_4</ci>
                        </apply>
                        <ci>dV_5</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t6</ci>
                <apply>
                    <plus/>
                    <ci>t5</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_6</ci>
                            <ci>V_5</ci>
                        </apply>
                        <ci>dV_6</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t7</ci>
                <apply>
                    <plus/>
                    <ci>t6</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_7</ci>
                            <ci>V_6</ci>
                        </apply>
                        <ci>dV_7</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t8</ci>
                <apply>
                    <plus/>
                    <ci>t7</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_8</ci>
                            <ci>V_7</ci>
                        </apply>
                        <ci>dV_8</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t9</ci>
                <apply>
                    <plus/>
                    <ci>t8</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_9</ci>
                            <ci>V_8</ci>
                        </apply>
                        <ci>dV_9</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t10</ci>
                <apply>
                    <plus/>
                    <ci>t9</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_10</ci>
                            <ci>V_9</ci>
                        </apply>
                        <ci>dV_10</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t11</ci>
                <apply>
                    <plus/>
                    <ci>t10</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_11</ci>
                            <ci>V_10</ci>
                        </apply>
                        <ci>dV_11</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t12</ci>
                <apply>
                    <plus/>
                    <ci>t11</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_12</ci>
                            <ci>V_11</ci>
                        </apply>
                        <ci>dV_12</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t13</ci>
                <apply>
                    <plus/>
                    <ci>t12</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_13</ci>
                            <ci>V_12</ci>
                        </apply>
                        <ci>dV_13</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t14</ci>
                <apply>
                    <plus/>
                    <ci>t13</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_14</ci>
                            <ci>V_13</ci>
                        </apply>
                        <ci>dV_14</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t15</ci>
                <apply>
                    <plus/>
                    <ci>t14</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_15</ci>
                            <ci>V_14</ci>
                        </apply>
                        <ci>dV_15</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t16</ci>
                <apply>
                    <plus/>
                    <ci>t15</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_16</ci>
                            <ci>V_15</ci>
                        </apply>
                        <ci>dV_16</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t17</ci>
                <apply>
                    <plus/>
                    <ci>t16</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_17</ci>
                            <ci>V_16</ci>
                        </apply>
                        <ci>dV_17</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t18</ci>
                <apply>
                    <plus/>
                    <ci>t17</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_18</ci>
                            <ci>V_17</ci>
                        </apply>
                        <ci>dV_18</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t19</ci>
                <apply>
                    <plus/>
                    <ci>t18</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_19</ci>
                            <ci>V_18</ci>
                        </apply>
                        <ci>dV_19</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>t20</ci>
                <apply>
                    <plus/>
                    <ci>t19</ci>
                    <apply>
                        <divide/>
                        <apply>
                            <minus/>
                            <ci>V_20</ci>
                            <ci>V_19</ci>
                        </apply>
                        <ci>dV_20</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>dV</ci>
                <piecewise>
                    <piece>
                        <ci>dV_2</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t1</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t2</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_3</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t2</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t3</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_4</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t3</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t4</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_5</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t4</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t5</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_6</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t5</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t6</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_7</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t6</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t7</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_8</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t7</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t8</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_9</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t8</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t9</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_10</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t9</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t10</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_11</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t10</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t11</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_12</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t11</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t12</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_13</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t12</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t13</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_14</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t13</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t14</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_15</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t14</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t15</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_16</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t15</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t16</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_17</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t16</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t17</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_18</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t17</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t18</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_19</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t18</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t19</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_20</ci>
                        <apply>
                            <and/>
                            <apply>
                                <gt/>
                                <ci>T_cardiac</ci>
                                <ci>t19</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>t20</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <piece>
                        <ci>dV_21</ci>
                        <apply>
                            <and/>
                            <apply>
                                <geq/>
                                <ci>T_cardiac</ci>
                                <ci>t20</ci>
                            </apply>
                            <apply>
                                <leq/>
                                <ci>T_cardiac</ci>
                                <ci>T_0</ci>
                            </apply>
                            <apply>
                                <gt/>
                                <ci>t</ci>
                                <ci>T_0</ci>
                            </apply>
                        </apply>
                    </piece>
                    <otherwise>
                        <cn cellml:units="volt_per_sec">0</cn>
                    </otherwise>
                </piecewise>
            </apply>
            <apply>
                <eq/>
                <apply>
                    <diff/>
                    <bvar>
                        <ci>t</ci>
                    </bvar>
                    <ci>u_0_Vm</ci>
                </apply>
                <ci>dV</ci>
            </apply>
        </math>
    </component>
    <import xlink:href="units.cellml">
        <units name="J_per_K_mol" units_ref="J_per_K_mol"/>
        <units name="fmol" units_ref="fmol"/>
        <units name="per_fmol" units_ref="per_fmol"/>
        <units name="mM" units_ref="mM"/>
        <units name="pL" units_ref="pL"/>
    </import>
</model>
