The murine major histocompatibility complex (NHC) includes sequences t
hat are responsible for haplotype-specific odor types that, in turn, i
nfluence mating preference. We report that there are several olfactory
receptor genes or pseudogenes in the Class I region of the human MHC.
At least one of these genes is intact, appears to encode an mRNA, and
is quite homologous to a previously reported murine olfactory recepto
r. (C) 1995 Academic Press, Inc.