我们身体的免疫系统和消化系统、神经系统、内分泌系统等一样重要,由免疫器官(骨髓、脾、淋巴结、扁桃体等)、免疫细胞(淋巴细胞、单核吞噬细胞、中性粒细胞等)和免疫物质(免疫球蛋白、干扰素、白细胞介素、肿瘤坏死因子等)组成,是防卫病原体入侵最有效的武器,能发现并清除自身异常细胞以及外来病原微生物,避免引起身体内环境的波动。免疫系统与其他系统紧密配合,相互制约,保证机体在复杂多变的内、外环境影响下处于生理平衡状态,维持身体健康和功能正常。对 Our body’s immune system is as important as the digestive, nervous and endocrine systems and is composed of immune organs (bone marrow, spleen, lymph nodes, tonsils, etc.), immune cells (lymphocytes, mononuclear phagocytes, neutrophils, etc.) Immune substances (immunoglobulins, interferons, interleukins, tumor necrosis factor, etc.), is the most effective weapon against the invasion of pathogens, can find and remove their own abnormal cells and foreign pathogenic microorganisms, to avoid causing fluctuations in the body’s environment. The immune system and other systems work closely with each other to restrict each other and ensure that the body is in a state of physiological balance under the complex and volatile internal and external environment and maintain normal health and functioning. Correct