Previous chapters discussed the concepts of immunogenicity and antigen presentation by immunocompetent cells. The present chapter explores the concept that the immune system is activated or deactivated by surface receptor interactions and subsequent intracellular signaling. Much like starting an automobile, several signals must be given in a defined sequence to override interlocking safety systems. When the immune system is stimulated, T and B cells give each other signals in a defined pattern. Because there is a possibility of uncontrolled proliferation during activation, the immune response is tightly controlled. If an improper signal is given, cellular proliferation is prevented and the cell undergoes programmed cell death or apoptosis.

How To Bolster Your Immune System

How To Bolster Your Immune System

All Natural Immune Boosters Proven To Fight Infection, Disease And More. Discover A Natural, Safe Effective Way To Boost Your Immune System Using Ingredients From Your Kitchen Cupboard. The only common sense, no holds barred guide to hit the market today no gimmicks, no pills, just old fashioned common sense remedies to cure colds, influenza, viral infections and more.

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