="" class="an ">&ensp;</span>The <span  title="" class="an ">&ensp;</span>properties <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>slow <span  title="" class="an ">&ensp;</span>gating <span  title="" class="an ">&ensp;</span>channels <span  title="" class="an ">&ensp;</span>contrasted <span  title="" class="an ">&ensp;</span>with <span  title="" class="an ">&ensp;</span>those <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>the <span