IL-2 is produced by: (A) T cells, (B) B cells, (C) Monocytes, (D) Neutrophils
Answer is A. IL-2 is produced by CD4 T helper cellsIts actions are:Promotes growth and differentiation of T and B cellsPromotes cytotoxicity of T cells and NK cellsPromotes secretion of other lymphokines IL-3 is produced by T cells for hematopoiesis(ref: Harrison's 18/e p2659, table 314-7)