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Human Health and Disease — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
Differentiate between T-helper cells and T-killer cells.
✓

Answer

Differences between T-helper cells and T-killer cells :
S.No.T-Helper cellsT-killer cells
1These cells secrete interleukins and activate T-killer cells and sensitized T-cells.Whereas these cells, after coming in contact with the micro-organism, secrete a cytotoxic substance directly from the body of the micro-organism and destroy it.
2These stimulate macrophages to perform cytophagic action. AIDS virus paralyzes the immune system by inactivating or destroying these cells.These killer cells also consume tissue cells infected with viruses.

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