Immune System

Immune System: Body's Defense System

The term "immune system" (Latin: immunis = free, untouched) by definition refers to the body's own defense system for protecting the body from diseases. It encompasses organs, cells, and proteins whose function is to maintain the body's own structure by defending against foreign substances and pathogens such as bacteria, viruses, or fungi.

It is particularly important that the immune system recognizes and combats inconsistencies—regardless of whether they are foreign structures (invaders) or diseased body cells such as tumor cells. The goal of the immune system is to maintain one's own health and keep the body in balance.