OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In which type of epithelial cells are ILC2, TH2, and TH9 cells activated by binding IgE to produce cytokines that recruit, support, and activate mast cells and basophils?
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skin epithelial cells
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intestinal epithelial cells
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -By secreting IL-4, Th2 cells instruct B cells to produce IgG1 and IgE10; by producing IL-4 and IL-13, Th2 cells induce alternatively activated macrophage11. Th2 cells also recruit eosinophils via IL-5 production12 and directly act on epithelial cells and smooth muscle cells through IL-13 production13–15.
Detailed explanation-2: -Innate lymphoid cells (ILCs) have emerged as an expanding family of effector cells particularly enriched in the mucosal barriers. ILCs are promptly activated by stress signals and multiple epithelial-and myeloid-cell-derived cytokines.
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