Which of the following cytokines are not secreted by Th2 type of helper T-cells?: (A) IL-1, (B) IL-4, (C) IL-5, (D) IL-13
Answer is A. Th2 type of helper T-cells Secrete IL-4, IL-5, IL-13 IL-4 stimulate Th2 cells Th2 cells in turn cause stimulation of IgE production, activation of mast cells and eosinophils Mainly involved in allergies and defense against helminthic infestations