Basic Principles of Immunity
The human body is equipped with adefense system, or "immune system," to fight invaders such as foreign substances and pathogens and maintain health. For example, when E. coli or influenza viruses, which cause food poisoning, invade the body, the immune system attacks and repels them. This immune system works not only against invaders from the outside, but also against abnormal cells generated in the body, providing a self-defense mechanism that protects the body from various diseases.
And the most important enemy in the body is cancer cells.
It's the immune system that kills the viruses, bacteria, and cancer cells
in your body!
There are two types of immunity: "innate immunity" and "acquired immunity"
. Let's take a closer look at our immune friends
!