Upon activation, a T-lymphocyte
A. ceases dividing and becomes a memory cytotoxic helper cell.
B. ceases dividing and becomes a plasma cell.
C. proliferates to form clones and memory cells.
D. proliferates to form B cells and plasma cells.
Answer: C
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Red blood cells, or ____________________, are biconcave, disc-shaped cells.?
Fill in the blank(s) with correct word
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