What is the meaning of non specific immunity

The first few pages of the high school biology book Non-specific immunity is also known as innate immunity or innate immunity. Like specific immunity, it is a genetic trait acquired by humans over a long period of evolution, but non-specific immunity is something that people are born with, and specific immunity needs to go through a process to acquire. For example, swine fever spreads quickly in pigs, but it has no chance with humans.

This is because humans are not born with this disease; There is also the inflammatory response, which is also an innate ability of people.

Innate immunity can respond rapidly to various invading pathogenic microorganisms, and also plays an important role in the initiation and effector process of non-specific immunity. The innate immune system includes: tissue barriers (** and mucosal system, blood-brain barrier, placental barrier, etc.); Innate immune cells (phagocytes, killer cells, dendritic cells, etc.); Innate immune molecules (complement, cytokines, enzymes, etc.).

There are three main parts1. Immune barriers, such as **, mucosa, blood-brain barrier, etc.

2. Phagocytic cells, such as neutrophils.

Natural killer cells, macrophages.

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Peculiarity. Wide range of action. The body responds to invading antigenic substances.

There is no specific selectivity for the removal of auspicious erections.

Quick response. Once the antigenic substance comes into contact with the body, it is immediately rejected and eliminated by the body.

There is relative stability. It is not affected by the invading antigenic substance, nor does it increase or decrease due to the strength or frequency of the invasive antigenic substance. However, when the body is affected by a common antigen or adjuvant, it can also enhance the ability to be immune.

There is hereditary. Organisms are born with non-specific immunity and can be passed on to their offspring. Therefore, non-specific immunity is also known as innate immunity or species immunity.

There are three main parts

1.Exemption from pre-manuscript epidemic barriers, such as **, mucosa, blood-brain barrier, etc. Sun Qing.

2.Phagocytic cells, such as neutrophils, natural killer cells, macrophages, etc.

3.Immune molecules, such as complement, cytokines, etc.

1. Specific immunity: Specific immunity is obtained after birth, after the body comes into contact with foreign microorganisms, so it is also called acquired immunity or acquired immunity. For example, artificial vaccinations allow the body to gain the ability to fight infection.

Specific immunity includes cellular immunity and humoral immunity.

2. Non-specific immunity: Non-specific immunity is born in the human body, so it is also called innate immunity or innate immunity, such as inflammatory reaction. Non-specific immunity includes tissue barriers, innate immune cells, innate immune molecules, etc.