nsp;</span>nerve <span  title="" class="an ">&ensp;</span>stimulation <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">MNS</span><span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>the <span  title="" class="an ">&ensp;</span>presence <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>guanethidine <span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</span>hexamethonium <span  title="" clas