Murine Ia Antigens: Identification and Mapping of Ia.23 and Further Definition of the I-E Subregion

Abstract

The Ia.23 specificity is a private specificity of the H-2^d haplotype which we have assigned to the I-E subregion. It is found on the same Ia molecule that bears Ia.7, a public specificity previously assigned to the I-C subregion of haplotypes H-2^d, H-2^k, H-2^p and H-2^r. We suggest a reassignment of specificity Ia.7 to the I-E subregion to simplify the interpretation of the data presented in this paper and elsewhere, and to permit an orderly description of that part of the I region to the right of I-J.