OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following are known for inflicting direct damage
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Helper T cells
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cytotoxic (killer) cells
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suppressor cells
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memory T cells
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Explanation:
Detailed explanation-1: -NK cell receptors can also be differentiated based on function. Natural cytotoxicity receptors directly induce apoptosis (cell death) after binding to Fas ligand that directly indicate infection of a cell. The MHC-independent receptors (described above) use an alternate pathway to induce apoptosis in infected cells.
Detailed explanation-2: -The surface of a cytotoxic T-cell has something called a CD8 receptor. The CD8 receptor interacts with cells called major histocompatibility complex (MHC) Class I molecules to recognize when healthy cells are infected. When the CD8 receptor recognizes an infected cell, it activates the cytotoxic T-cells.
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