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T淋巴细胞分化的机制迄今尚未完全清楚。近年,胸腺基质成分与淋巴细胞直接接触对淋巴细胞某些分化阶段的影响,受到国外学者的重视。1980年,Wekerle等首先在小鼠胸腺悬液中发现一种体积较大、具有I_α抗原、其胞质内含有数量不等淋巴细胞的上皮细胞,被称为胸腺哺育细胞(Thymic Nurse Cell_5-TNC_5)。此后,国外一些学
The mechanism of T lymphocyte differentiation has not yet been fully understood. In recent years, thymus matrix components and lymphocytes in direct contact with lymphocytes in some stages of differentiation, by foreign scholars attention. In 1980, Wekerle et al first found a bulky I_α antigen in the mouse thymus suspension, which contains epithelial cells with varying numbers of lymphocytes in the cytoplasm and is called thymus nurse Cell_5-TNC_5 ). Since then, some foreign learning