胸腺分泌的胸腺素能促使 T 细胞的前身细胞(前 T 细胞)分化、增殖、成熟成为 T 细胞的各种功能亚群,控制调节着一系列免疫反应的质和量。这一系列的免疫反应包括移植免疫、肿瘤免疫,对病毒、细菌、真菌及原虫等感染的免疫。临床上利用胸腺素这些生物活性治疗肿瘤和多种感染性疾病。我们从小牛胸腺提取胸腺素。本实验通过 Thymosin secreted by the thymus can promote the differentiation, proliferation and maturation of precursor cells (T cells) of T cells into various functional subsets of T cells, which control the quality and quantity of a series of immune responses. This series of immune responses includes transplant immunity, tumor immunity, immunity to infections such as viruses, bacteria, fungi and protozoa. The clinical use of thymosin these biological activity of cancer and a variety of infectious diseases. We extracted thymosin from calf thymus. The experiment passed