In mammalian defenses against invading pathogens, all of these are considered nonspecific defense mechanisms except
A) antimicrobial proteins.
B) mucous membranes.
C) the inflammatory response.
D) the immune system.
E) the skin.
Answer: D
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AP Biology
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- Which of the following pieces of additional data would help further investigate the relationship between bears, salmon, and influx of nitrogen into the local environment?
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