span  title="" class="an ">&ensp;</span>peptide <span  title="" class="an ">&ensp;</span>enhance <span  title="" class="an ">&ensp;</span>release <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>endogenous <span  title="" class="an ">&ensp;</span>glutamate <span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</span><span  title="ProteinName" class="an ProteinName">aspartate</span><span  title="" class="an ">&ensp;</span>from <span  title="" class