an><span  title="ProteinName" class="an ProteinName">Glu</span><span  title="" class="an ">&ensp;</span>R <span  title="" class="an ">&ensp;</span>activation <span  title="" class="an ">&ensp;</span>Initiation <span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</span>propagation <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>waves <span  title="" class="an ">&ensp;</span>required <span  title="" class="an ">&ensp;</span>calcium <span  title="