What is the immune system?

 

Our body is constantly exposed to micro-organisms such as bacteria and viruses. Our body has the ability to prevent such a substance from entering the body and to destroy it if it has grown. Germs can enter the body and cause disease. In such a case, the white blood cells have the ability to swallow the germs. Or they produce antibodies to destroy those germs. 

In this way the immune system helps to protect our body.Immunizations also provide immunity to the body. This vaccination is called immunization.