Source:http://linkedlifedata.com/resource/umls/id/C0022145
MSH: Antigens that exist in alternative (allelic) forms in a single species. When an isoantigen is encountered by species members who lack it, an immune response is induced. Typical isoantigens are the BLOOD GROUP ANTIGENS.,CSP: antigen carried by an individual, which is capable of eliciting an immune response in genetically different individuals of the same species but not in the individual bearing it.