Multiple Choice
How does a cell ʺinformʺ the immune system that it is infected with a virus?
A) It displays viral proteins on its membrane.
B) It synthesizes enzymes that activate helper T cells.
C) It secretes steroid hormones.
D) It produces interferon.
E) It releases histamine into the bloodstream.
Correct Answer:

Verified
Correct Answer:
Verified
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