The MNSs antigen Ridley (Ria).
After more than 20 years the extended pedigree of the only known kindred carrying the low frequency antigen Ria (Ridley) was reinvestigated. It is established that Ria is governed by a gene which is part of or very closely linked to the MNSs locus. Further serological and frequency studies are reported.
D002918:Chymotrypsin / Q000494:pharmacology; D004912:Erythrocytes / Q000187:drug effects / Q000276:immunology; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D008040:Genetic Linkage; D006801:Humans; D007518:Isoantibodies / Q000032:analysis; D007519:Isoantigens / Q000032:analysis; D008951:MNSs Blood-Group System; D008297:Male; D010206:Papain / Q000494:pharmacology; D010375:Pedigree; D011402:Pronase / Q000494:pharmacology; D014357:Trypsin / Q000494:pharmacology
D007518:Isoantibodies; D007519:Isoantigens; D008951:MNSs Blood-Group System; D002918:Chymotrypsin; D014357:Trypsin; D010206:Papain; D011402:Pronase