How do cytotoxic T cells destroy a virus-infected body cell?
Answer and explanation
Correct answer: C. They recognise antigen on MHC class I and trigger apoptosis of the infected cell
- Step 1: Body cells display viral fragments on MHC class I molecules.
- Step 2: A cytotoxic T cell with a matching receptor binds the cell and releases chemicals that trigger apoptosis.
Answer
recognise antigen on MHC I and trigger apoptosis.
Why not the others: Antibodies come from plasma cells; engulfing is phagocytosis; histamine is released in allergic and inflammatory responses.
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