The I-J subregion codes for determinats on suppressor factor(s) which limit the contact sensitivity response to picryl chloride.
Greene MI, Pierres A, Dorf ME, Benacerraf B. The I-J subregion codes for determinats on suppressor factor(s) which limit the contact sensitivity response to picryl chloride. J Exp Med. 1977 Jul 01; 146(1):293-6.