Allelic alloantigens often responsible for weak graft rejection in cases when (major) histocompatibility has been established by standard tests. In the mouse they are coded by more than 500 genes at up to 30 minor histocompatibility loci. The most well-known minor histocompatibility antigen in mammals is the H-Y antigen.

Synonyms: Minor Histocompatibility Peptides, 0, Histocompatibility Peptide, Minor, Minor Histocompatibility Peptide, Minor Histocompatibility Antigen, Minor Histocompatibility Antigens, Histocompatibility Antigens, Minor, Histocompatibility Peptides, Minor, Peptide, Minor Histocompatibility, Antigen, Minor Histocompatibility, Histocompatibility Antigen, Minor