sp;</span>P <span  title="" class="an ">&ensp;</span>type <span  title="" class="an ">&ensp;</span>components <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>calcium <span  title="" class="an ">&ensp;</span>current <span  title="" class="an ">&ensp;</span>the <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">HT</span><span  title="" class="an ">&ensp;</span>sensitive <span  title="" class="an ">&ensp;</span>current <span  title="" class="an ">&en