Immune System for PC

The immune system, the immune system, or the body's defense system are the cells and many other biological structures that are responsible for immunity, that is, the defense in organisms to protect the body from outside biological influences by recognizing and killing pathogens. Meanwhile, the collective and coordinated response of the body's immune system to the introduction of a foreign substance is called the immune response. In order to function properly, this system will identify various kinds of external biological influences such as infections, bacteria, viruses to parasites, as well as destroy other foreign substances and remove them from the cells and tissues of healthy organisms so that they continue to function normally.

Humans and other jawed vertebrates possess complex defense mechanisms, which can be divided into the innate immune system and the adaptive immune system. The innate immune system is an initial form of defense involving surface barriers, inflammatory reactions, complement systems, and cellular components. The adaptive immune system develops because it is activated by the innate immune system and it takes time to be able to mount a stronger and more specific defense response. Adaptive (or acquired) immunity establishes an immunological memory after the initial response to a pathogen and provides enhanced protection upon subsequent encounters with the same pathogen. This process of acquired immunity forms the basis of vaccination.