Eight immune items refer to eight physiological mechanisms that the human body plays a role in the process of resisting diseases, including cellular immunity, humoral immunity, inflammatory response, complement system, mucosal immunity, immune memory, autoimmune and immune tolerance. The eight immune mechanisms of human body can cooperate, interact and influence each other, thus resisting most pathogens and protecting the body from diseases.

Immune eight items are very important to human body. If our immune system works normally, we can effectively identify and attack bacteria, viruses and other external threats that invade our bodies. Moreover, once the body records the pattern of a pathogen, the immune system will retain the information of this pattern and establish immune memory in case of emergency.

Although the immune system can play a very good protective role, sometimes our immune system will be abnormal. For example, the immune system may attack its normal cells or tissues, leading to autoimmune diseases. In addition, some people's immune system is not completely normal at birth, which will lead to immune deficiency and increase the chance of infection. Therefore, it is very important to know the eight immunization programs, and maintaining a healthy lifestyle and regular physical examination are also effective means to prevent diseases.