5_3_The_Immune_System

5_3_The_Immune_System - The Immune System: Homeland...

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The Immune System: Homeland Security What are the major components of defense against microbial (viral, bacterial, fungal) pathogens? Why does vaccination confer protection? How can the adaptive immune system recognize so many different agents it has never before seen? Why does HIV infection cause immunodeficiency?
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A layered defense
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Evolution of the adaptive immune system Nadia Danilova MIT OpenCourseWare Specific to vertebrates
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GALT = gut-associated lymphoid tissue Evolution of lymphoid tissues
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Properties of the adaptive immune response Foreign protein/virus or bacterium (A) lag Reintroduction of (A) + (B) No lag Antibodies to (A) Much greater **remembers prior exposure to (A)** **specific and has memory**
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Q: The adaptive immune response: A) Evolved in the common ancestor to all animals B) Is specific for a particular antigen C) Exhibits long-term memory of prior exposure to a particular antigen D) Both A) and B) E) Both B) and C)
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Two branches of the adaptive immune system White blood cells = lymphocytes Plasma cells(differentiated) arise from B cells; produce
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This note was uploaded on 01/25/2011 for the course BIO 1510 taught by Professor Unknown during the Spring '07 term at Georgia Tech.

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5_3_The_Immune_System - The Immune System: Homeland...

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