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Question

Cells responsible for cell mediated response are

A
cytotoxic T cells
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B
B cells
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C
helper T cells
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D
All of these
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Solution

The correct option is A cytotoxic T cells
Cytotoxic T cells
Cytotoxic T cells or killer T cells are capable of killing pathogens and infected cells.
They release pore-forming proteins called ‘perforins’ which punch holes in the plasma membrane of some of the body’s own cells and foreign cells, followed by entry of water into them which leads to bursting of these cells.
They are the main components of CMI or cell mediated immunity.

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