大约在20年前,警方根据在调查中发现的血迹,只能弄清受害者或凶手的常规血型而无法鉴定出是何许人。近几年来,由于可以通过凝胶体的电泳来分析红细胞内的某些酶,以及可以利用很多验血者的几个细胞系,调查就比较准确了。但是,迄今还不能说明供血者的年龄、性别和特征。现在英国内政部中心研究机构 About 20 years ago, on the basis of the bloodstains discovered during the investigation, the police were unable to identify only the normal blood type of the victim or murderer. In recent years, surveys have been more accurate due to the ability to analyze certain enzymes in the erythrocytes by gel electrophoresis, as well as several cell lines that make use of many blood donors. However, the age, sex and characteristics of donors have so far not been explained. Now the British Ministry of the Interior Research Center