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tEamXtreme tEamXtreme
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7 years ago
What is the body's major defense against "foreign invaders" such as bacteria or viruses?
A) circulatory system
B) immune system
C) pituitary gland
D) central nervous system
Textbook 
Psychology: AP Edition

Psychology: AP Edition


Edition: 1st
Authors:
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OrEOrE
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7 years ago
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