在实际侦查中 ,皮肤上咬痕的鉴定比较注重咬痕的痕迹特征检验。由于人的皮肤在记录咬痕方面是一种很差的介质 ,有些咬痕特征不能得到明显的反映 ,因而在个人识别上的利用价值不大。应用ＰＣＲ -ＳＴＲ技术对咬痕留在皮肤上的唾液斑进行多态ＤＮＡ位点分型 ,可以达到个人认定或 In the actual investigation, the identification of bite marks on the skin pays more attention to the trace feature test of bite marks. Since human skin is a poor medium for recording bite marks, some bite mark characteristics can not be clearly reflected, so the use of personal identification is of little value. Application of PCR-STR technology on the bite marks on the skin of saliva spots polymorphic DNA site typing, can be achieved personally or