IL-I is produced by: (A) Macrophage, (B) Helper T lymphocytes, (C) B cells, (D) Cytotoxic T-cells
Answer is A. Ans. (a) Macrophage Ref. Ananthanarayan 8/e, p 148, 9/e, p 154; Robbin's 7/e, p 82 Already explained in answer no. 5