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B淋巴细胞的分化、增殖一直是细胞免疫研究的热门课题,最近Namen 等从SU40转化的骨髓细胞系中分离出一种25KDa 的蛋白及其cDNA 克隆,此蛋白的天然形式和重
B lymphocyte differentiation and proliferation has been a hot topic in the research of cellular immunity. Recently, Namen et al. Isolated a 25KDa protein and its cDNA clone from SU40 transformed bone marrow cell line. The natural form and weight of this protein