A. phagocytosis.
B. production of antibodies.
C. inflammation.
D. the intact skin.
E. immunity.
Showing posts with label skin. Show all posts
Showing posts with label skin. Show all posts
Friday, May 13, 2011
The first line of defense against pathogens is ...
A. phagocytosis.
B. production of antibodies.
C. inflammation.
D. the intact skin.
E. immunity.
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