Introduction

Higher species have the evolutionary benefit of an immune system that comprises both innate and acquired components. Whereas the innate immune system confers initial protection, the acquired immune system provides a second line of defense against infectious organisms.[1,2] The acquired immune system is activated once macrophages, dendritic cells, and other antigen-presenting cells (APCs) process foreign antigens (i.e., the products derived from infectious organisms, tumors, vaccines, etc.) Many APCs also transport the foreign antigen into regional immune lymph nodes.[3] APCs initiate adaptive immune responses by interacting with different populations of T and B cells.

How To Bolster Your Immune System

How To Bolster Your Immune System

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