itle="" class="an ">&ensp;</span>We <span  title="" class="an ">&ensp;</span>investigated <span  title="" class="an ">&ensp;</span>the <span  title="" class="an ">&ensp;</span>effects <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>serotonin <span  title="" class="an ">&ensp;</span>hydroxytryptamine <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">HT</span><span  title="" class="an ">&ensp;</span>on <span  title="" class="an ">&ensp;</span>whole