Immune Mechanisms of Human Disease
Multicellular animals have devoted cells or tissues to deal with the menace of infection. Some of these reactions happen immediately so that an infecting agent can be swiftly contained and other reactions are slower but are more tailored to the infecting agent. Collectively, these fortifications are known as the immune system. The mortal immune system is indispensable for our existence in a world full of potentially hazardous microbes and severe impairment of even one arm of this system can predispose to severe, even life-threatening, contaminations.