Translations:Immunsystem/1/en

The immune system is the body's own defence system against higher organisms, which distinguishes between its own and foreign structures and protects the organism against diseases. The immune system (from the Latin immunis actually "tax-free", in the figurative sense untouched, free, pure) is the biological defence system of higher organisms, which prevents tissue damage by pathogens. It removes microorganisms that have penetrated the body, foreign substances and is also able to destroy the body's own cell that have become defective. The immune system is a complex network of different organ, cell types and molecules.