kiranmayi
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Which of the following is a major interleukin produced by CD4+ T helper 1 (TH1) lymphocytes?
A. IL-1
B. IL-2
C. IL-4
D. IL-6
E. IL-8
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| asmi
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IL 4
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| dxtxpx
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IL-2
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| kiranmayi
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Posts: 407
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The correct answer is B. IL-2 produced by TH1 cells stimulates natural killer (NK) cells and CD8+ T cytotoxic lymphocytes and combines with IL-2 receptors on the TH1 cells to cause "self-stimulation". IL-2 is also involved in downregulating CD4+ T helper 2 lymphocytes.
IL-4 (choice C) is derived from CD4 + T helper 2 cells. It acts to downregulate CD4 + TH1 cells and allows class switching to IgE.
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| asmi
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THANKS will remember it better now
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