 class="an ProteinName">Ca</span><span  title="" class="an ">&ensp;</span>channels <span  title="" class="an ">&ensp;</span>were <span  title="" class="an ">&ensp;</span>studied <span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>frog <span  title="" class="an ">&ensp;</span><span  title="BrainRegionP" class="an BrainRegionP">dorsal</span><span  title="" class="an ">&ensp;</span>root <span  title="" class="an ">&ensp;</span>ganglion <span  title="" class="an ">&ensp;</span><