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Home Q & A Board Biology-Related Homework Help Cell Biology
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barry barry
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10 years ago
Which is the best definition of “immunity”?

A.   The state of having been exposed to a pathogen repeatedly
B.   The state of being resistant to reinfection with a pathogen
C.   When an individual has never been exposed to a pathogen
D.   When the immune system is activated
E.   When physical barriers are not enough to prevent infection
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bio_manbio_man
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10 years ago
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barry Author
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#2
10 years ago
Thanks bio_man
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