<prompt> The following interleukin is characteristically produced in TH1 response -IL1IL2IL3IL4  <response>: Ans. is b i.e.? IL2 Selected important cytokinesNameMajor Cellular SourceSelected Biologic EffectsIFN-a, -bLeukocytes IFN-a, fibroblasts IFN-bAntiviral, pyrogenicIFN-interferonT cells, NK cellsActivates mononuclear phagocytesTNF-a tumor necrosis factor alphaMacrophages, NK cellsCell activation, fever, cachexia, antitumorTNF -b tumor necrosis factor beta.T cells. B cellsActivates leukocytes, antitumorLT lymphotoxin 1L-1 interleukin - 1Macrophages, epithelial cellsT cell and macrophage activation,fever, cachexiaIL-2 interleukin - 2T cells CD4 Helper T-cellsT cell growth and activationIL-3 interleukin - 3T cells, thymic epithelial cellsHematopoiesisIL-4 interleukin - 4T cells, mast cells, NK cellsB cell proliferation and switching to IgEIL-5 interleukin - 5T cellsDifferentiation of eosinophilsIL-7 interleukin - 7Bone marrow stromal cellsLymphoid progenitor differentiation 