一例陈旧肝组织用于法医物证鉴定

A Case of Corrupt Liver Tissue Used in Forensic Evidence Identification

近年来,法医物证鉴定在刑侦工作中的应用范围逐渐扩展,刑侦工作的复杂性决定了法医物证鉴定的困难性,疑难案件中检材数量和类别有限,加大了法医物证检材阳性检出的难度。本例案件是用冰冻保存长达两年之久的毒化检验肝组织留样与陈旧肋软骨组织进行DNA同一认定鉴定,同时利用陈旧肝组织与活体血样进行尸源认定鉴定。采用QIAamp®DNA Investigator Kit试剂盒对DNA进行纯化,得到了良好的分型结果,为案件的侦破提供科学可靠的依据。

In recent years,the application scope of forensic evidence identification in criminal investigation has gradually expanded,and the complexity of criminal investigation has determined the difficulty of forensic evidence identification.The number and types of samples in difficult cases are limited,which makes it more difficult to detect the positive detection of forensic evidence.In this case,we used the poisoning test liver tissue sample which was preserved by cryopreservation for up to two years and old rib cartilage tissue for DNA identification.At the same time,the corrupt liver tissue and living blood samples were used for identification of the cadaveric source.DNA purification using the QIAamp®DNA Investigator Kit,got good typing results,providing a scientific and reliable basis for the detection of cases.