 <span  title="" class="an ">&ensp;</span>p <span  title="" class="an ">&ensp;</span>S <span  title="" class="an ">&ensp;</span>Their <span  title="" class="an ">&ensp;</span>activity <span  title="" class="an ">&ensp;</span>was <span  title="" class="an ">&ensp;</span>enhanced <span  title="" class="an ">&ensp;</span>with <span  title="" class="an ">&ensp;</span>membrane <span  title="" class="an ">&ensp;</span>depolarization <span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</