itle="" class="an ">&ensp;</span>like <span  title="" class="an ">&ensp;</span>growth <span  title="" class="an ">&ensp;</span>factors <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">IGF</span><span  title="" class="an ">&ensp;</span>s <span  title="" class="an ">&ensp;</span>maintain <span  title="" class="an ">&ensp;</span>vital <span  title="" class="an ">&ensp;</span>neuronal <span  title="" class="an ">&ensp;</span>functions <span  title="" class="an ">&ensp;</span>Absolute <