an>to <span  title="" class="an ">&ensp;</span>plasma <span  title="" class="an ">&ensp;</span>membrane <span  title="" class="an ">&ensp;</span>Receptor <span  title="" class="an ">&ensp;</span>tyrosine <span  title="" class="an ">&ensp;</span>kinases <span  title="" class="an ">&ensp;</span>trigger <span  title="" class="an ">&ensp;</span>a <span  title="" class="an ">&ensp;</span>signaling <span  title="" class="an ">&ensp;</span>cascade <span  title="" class="an ">&ensp;</span>leading <span  title="" cl