What is the function of immunity? What are the basic functions of immunity

Immunity is the self-protection function obtained by people in long-term evolution, we call it the human immune function, this function is very complete and powerful, to sum up, immunity has three major functions for the human body: the first function is to protect the human body from bacteria, viruses and other harmful microorganisms infection, we call this immune defense, the second function of immunity is to remove the body's own aging and dead cells The third function of immunity is to remove cancer cells in the human body in time to prevent the occurrence of cancer, we call it immune surveillance.

Immunity refers to the body's ability to recognize and remove antigenic transport foreign bodies. Under normal circumstances, it is beneficial to the body of Ponhokai, but it can also be harmful under certain conditions. Its basic functions include immune defense, immune stability, and immune surveillance.

The function of immunity is mainly manifested in three aspects, namely, immune prevention, immune stability and immune surveillance. 1 Immunoligic defence refers to the body's ability to resist and eliminate pathogenic microorganisms or other foreign bodies. Abnormalities in immunoprophylaxis can cause disease, such as hypersensitivity reactions

Immunity refers to body exposure"Antigenic foreign bodies"or"Exotic ingredients"A specific physiological response that acts by recognizing or excluding antigenic foreign substances in order to maintain the body's physiological balance. It is good for the body under normal conditions, but it can also be harmful under certain conditions.

There are three basic functions of immunity:

1) Immune defense: Under normal circumstances, the body can prevent pathogenic microorganisms from invading or inhibiting their reproduction and spread in the body. However, under abnormal circumstances, if the reaction is too far away, it will cause a hypersensitivity reaction; If the response is too low or deficient, an immunodeficiency disorder develops.

2) Immune stability: Under normal circumstances, the body's immune system can frequently remove damaged or senescent self-cells in the body, and carry out immune regulation to maintain the physiological balance of the body. When the autostable function is disordered, it is easy to lead to autoimmune diseases;

3) Immune surveillance: Under normal circumstances, the body's immune system can recognize, kill and remove mutant cells in the body to prevent the occurrence of tumors.

Immunoactive substances refer to lymphokines, antibodies, lysozyme, and other substances produced by immune cells or other cells to exert immune effects.

A state that resists or prevents infection by microorganisms or parasites or other undesirable biological invasions. Immunity involves both specific and non-specific components.

Non-specific components do not require prior exposure and can respond immediately, which can effectively prevent the invasion of various pathogens. Specific immunity is developed during the life of the subject and is immunity specifically against a certain pathogen.

The first line of defense is like the antivirus software itself, and the third line of defense is like a virus Trojan that kills software.

Only when the three lines of defense play an immune, complete and intact role can our health be more fully guaranteed.