IL4 and tuberculosis: Since Th1 and Th2 cytokines regulate the secretions with each other, they found that the overall Th1/Th2 cytokine ratios (IFNγ : IL-4, IFNγ : IL-5, and IFNγ : IL-10 and TNFβ : IL-4, TNFβ : IL-5, and TNFβ : IL-10) were lower in the diabetic TB patients than NDM-TB patients and healthy subjects.