pan  title="" class="an ">&ensp;</span>activate <span  title="" class="an ">&ensp;</span>nociceptive <span  title="" class="an ">&ensp;</span>C <span  title="" class="an ">&ensp;</span>fibers <span  title="" class="an ">&ensp;</span>which <span  title="" class="an ">&ensp;</span>bear <span  title="" class="an ">&ensp;</span>bradykinin <span  title="" class="an ">&ensp;</span>receptors <span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</span>capsaicin <span  title="" class="an ">