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When a "New" Antigen First Challenges the Immune System, If

Question 26

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When a "new" antigen first challenges the immune system, if the primary immune response produces B cells, what are the fates of those B cells? I-Some of the B cells become plasma cells that secrete antibodies.II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again.III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever.


A) just II
B) just I
C) II and III
D) I and II

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