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白细胞共同抗原又称CD_(45)系列抗原,是由1组跨膜糖蛋白组成,根据分子量不同至少有4种存在形式,即178.6ku、188.5 ku、203.4 ku、218.3 ku,通常在它们表型分析中只区分为高分子质量和低分子质量。根据分子质量的高低被分成两组抗原,低分子质量178.6 ku命名为CD_(45)RO,高分子量203.4/218.3 ku命名为CD_(45)RA。CD_(45)抗原的表达已经广泛地应用于T、B细胞不同分化的研究,而对白血病免
Leukocyte common antigen, also known as CD45 series antigen, is composed of a group of transmembrane glycoproteins, which have at least 4 forms according to different molecular weights, namely 178.6ku, 188.5u, 203.4u and 218.3uu, usually in their phenotype The analysis is only divided into high molecular weight and low molecular weight. According to the molecular weight of the high and low is divided into two groups of antigens, low molecular weight of 178.6 ku named CD_ (45) RO, high molecular weight of 203.4 / 218.3 ku named CD_ (45) RA. The expression of CD_ (45) antigen has been widely used in the study of different differentiation of T and B cells, while the leukemia-free