Page 44 - Veterinary Immunology, 10th Edition

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FIG. 1.9 In adaptive immunity, on first exposure to a foreign
invader the body destroys the invaders but, in addition, generates
memory cells. On second exposure to that invader, these memory
cells act to mediate a much stronger immune response that results
in much faster destruction of the invader.

In subsequent chapters we will first review the mechanisms
involved in innate immunity. Following that, we will review

adaptive immunity and examine each of its basic components in
turn. We will then examine the role of the immune system in
protecting animals against microbial invasion. Finally, we will look

at the diseases that result when the immune system functions either
excessively or inadequately.

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