★ Pathogens, Disease and Immunity Quiz
What are molecules on cells that the immune system recognize either as part of the body or as coming from outside the body?
A. antibodies.
B. antigens.
C. T cells.
D. B cells.
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The part of foreign materials that cause a response from the immune system are called _____________________.
A. Antigens
B. Active Immunity
C. Antibodies
D. Antibiotics
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