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|a6=IFN-γ
|a6=IFN-γ
|l6=Cytokines
|l6=Cytokines
|q7=What cytokine, produced primarily by Th2 cells, activates B cells and the [[IgE]] switch?
|q7=What cytokine, produced primarily by T<sub>H</sub>2 cells, activates B cells and the [[IgE]] switch?
|a7=IL-4
|a7=IL-4
|l7=Cytokines
|l7=Cytokines