le="" class="an ">&ensp;</span>knock <span  title="" class="an ">&ensp;</span>out <span  title="" class="an ">&ensp;</span>mice <span  title="" class="an ">&ensp;</span>yielded <span  title="" class="an ">&ensp;</span>a <span  title="" class="an ">&ensp;</span>gamma <span  title="" class="an ">&ensp;</span>indistinguishable <span  title="" class="an ">&ensp;</span>from <span  title="" class="an ">&ensp;</span>that <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>Kv <span 