最初命名T细胞生长因子的人类白细胞介素-2(IL-2)是一种分子量1.5万的糖蛋白,其编码遗传基因位于第4号染色体长臂。IL-2主要由T淋巴细胞分泌。T细胞中有很少一部分细胞其膜表面具有称为“抗原受体”的特殊蛋白质,它们能识别并与外来抗原结合,从而使自身活化,在巨噬细胞分泌的白细胞介素-1协助下,这些活化的T细胞即合成 Human interleukin-2 (IL-2), originally named T-cell growth factor, is a glycoprotein with a molecular weight of 15,000, and its coding gene is located on the long arm of chromosome 4. IL-2 is mainly secreted by T lymphocytes. There are a few cells in the T cells that have special proteins called “antigen receptors” on the membrane surface that can recognize and bind to foreign antigens and thus activate themselves, with the help of interleukin-1 secreted by macrophages. , these activated T cells are synthesized