人体的各种生理功能都是由一定的器官、细胞等组成的系统来完成的,如呼吸系统、消化系统分别担负着呼吸和消化的功能。同样,人的特异性免疫功能是由免疫系统来完成的。免疫系统由免疫器官、免疫细胞、免疫分子组成。它们是形成体液免疫和细胞免疫的物质基础 The body’s various physiological functions are made up of certain organs, cells and other components of the system, such as the respiratory system, digestive system, respectively, responsible for breathing and digestion. Similarly, human-specific immune functions are performed by the immune system. Immune system by the immune organs, immune cells, immune molecules. They form the material basis for humoral and cellular immunity