21. The Immune System
Introduction to T Lymphocytes
Multiple Choice
Multiple ChoiceWhich of the following statements about cytotoxic T cells is true?
A
When cytotoxic T cells encounter an antigen, they produce cytokines to stimulate other immune cells.
B
When cytotoxic T cells encounter “presented” antigens, they send signals triggering apoptosis in the infected cell.
C
When cytotoxic T cells encounter an antigen, they recruit B cells to produce antibodies.
D
Cytotoxic t cells only recognize and respond to “free” antigens.
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