《论衡·卷二十三·言毒篇》
毒汁有的藏在首尾部，所以刺咬就有毒；有的藏在体肤内，所以吃了往往胸闷；有的是附在嘴唇上，所以舌头摇动就会产生祸害。
毒或藏於首尾，故螫有毒；或藏于体肤，故食之辄懑；或附於脣吻，故舌鼓为祸。
Some of the venom is stored in the head and tail, so the sting is poisonous; some is stored in the body, so eating it often causes chest tightness; some is attached to the lips, so the tongue will cause harm when it moves.