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

question 26

Multiple Choice

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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