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Choose the correct answer

When a CD4 helper Th1 cell binds to a target antigen, it produces which cytokine(s)?

a) Interferon γ to stimulate macrophages

b)Il-4 to stimulate B cells to differentiate into IgE plasma cells, Il-5 to stimulate eosinophil production Il-13 to promote IgE production

c) Il-17 to recruit neutrophils and macrophages

d) Granulocyte-Macrophage-CSF to stimulate bone marrow production of phagocytes