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ＣＤ３４抗原是一个阶段特异性白细胞分化抗原，在早期造血调控方面起着重要的作用。本文采用ＲＴ－ＰＣＲ方法，从高效表达ＣＤ３４抗原的ＫＧ－ｌａ细胞系中成功地克隆出ＣＤ３４抗原全长ｃＤＮＡ，并对重组基因进行了酶切鉴定和序列分析。结果表明除胞内区有一碱基改变，其它序列与报道完全一致。
CD34 antigen is a stage-specific leukocyte differentiation antigen that plays an important role in the regulation of early hematopoiesis. In this study, the full-length cDNA of CD34 antigen was successfully cloned from KG-1a cell line highly expressing CD34 antigen by RT-PCR and the recombinant gene was identified by restriction enzyme digestion and sequence analysis. The results showed that except for the intracellular region of a base change, the other sequences are exactly the same reported.