Objection : this study is to prepare a kind of bispecific antibody of anti - hiv p24 antigen and anti - human rbc type a antigen , and to build a new way to detect hiv p24 antigen with this bispecific antibody 目的:制备抗hivp24和抗人a型红细胞双特异性抗体,建立检测hivp24抗原的新方法。