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以往研究表明，B淋巴细胞在发育中合成免疫球蛋白（Ig）的能力是逐渐完善的[1]，新生儿已能产生分泌各种血清型Ig的B淋巴细胞，但直到出生后数年才发展成为表现抗体反应的“成年型”细胞。T淋巴细胞在胸腺微环境影响下发育，先后表达多类免疫分子介导细胞免疫应答与调节，为探
Previous studies have shown that the ability of B lymphocytes to synthesize immunoglobulins (Ig) during development is progressively improved [1]. Neonates have been able to produce B lymphocytes that secrete various serogroup Ig, but only a few years after birth Develop into “adult” cells that display antibody responses. T lymphocytes under the influence of thymus microenvironment development, has expressed a variety of immune molecules to mediate cellular immune response and regulation, for the exploration