A quantitative difference in the activity of blood group A-specific N-acetylgalactosaminyltransferase in serum from A 1  and A 2  human subjects.
D000017:ABO Blood-Group System; D000818:Animals; D002247:Carbon Isotopes; D002854:Chromatography, Paper; D005260:Female; D005688:Galactosamine; D006801:Humans; D007125:Immunogenetics; D009030:Mosaicism; D009077:Mucins / Q000032:analysis; D009844:Oligosaccharides / Q000032:analysis; D011247:Pregnancy; D013363:Submandibular Gland; D013552:Swine; D014166:Transferases / Q000097:blood*; D014500:Uracil Nucleotides
D000017:ABO Blood-Group System; D002247:Carbon Isotopes; D009077:Mucins; D009844:Oligosaccharides; D014500:Uracil Nucleotides; D005688:Galactosamine; D014166:Transferases