s="an ">&ensp;</span>levels <span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>a <span  title="" class="an ">&ensp;</span>subpopulation <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span><span  title="Size" class="an Size">small</span><span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">DRG</span><span  title="" class="an ">&ensp;</span><span  title="Neuron" class="an Neuron">neurons</span><span  title="" class="an ">&