胸腺在人和动物免疫功能发生发展中是一极其重要的器官,其上皮细胞合成和分泌的可溶性因子提取物即胸腺肽,可使特殊的淋巴前体细胞分化为具有免疫活性的T淋巴细胞已在众多的临床和动物实验文献中得以证实.近年来,随着细胞学、分子生物学和遗传学等研究的深入,免疫学有了飞跃的发展.人们对免疫缺陷性疾病、自身免疫性疾病等内在机理有了比较清楚的认识,并在临床工作中使用免疫抑制剂、免疫增强剂.调节机体的免疫反应状态,收到较好效果.胸腺 The thymus is an extremely important organ in the development of immune function in humans and animals. The soluble factor extract that is synthesized and secreted by epithelial cells, namely thymosin, can differentiate specific lymphocyte precursors into immunocompetent T lymphocytes A large number of clinical and animal experiments have been confirmed in the literature.In recent years, with the development of cytology, molecular biology and genetics, immunology has developed rapidly.People with immunodeficiency diseases, autoimmune diseases, etc. With a clear understanding of the internal mechanism, and clinical use of immunosuppressive agents, immune enhancers. Regulate the body’s immune response, and received good results. Thymus