Antibodies have complementary surface markers that work with ______ like a lock and key.
A) histamines
B) antigens
C) T cells
D) cytokines
Correct Answer:
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Q3: White blood cells that directly destroy virus-infected
Q5: Macrophages act as
A)scavengers of worn-out cells.
B)healers of
Q7: A marker on the surface of a
Q10: Chemicals responsible for the dilation and increased
Q14: Chemical messengers released by immune system cells
Q15: An infection that travels throughout the body
Q16: A type of white blood cell that
Q20: Which of the following is NOT a
Q21: A preparation of killed or weakened pathogens
Q22: Which of the following statements about the
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