title: Biochemical, serological and family studies in individuals with Cis AB phenotypes.
abstract: Pedigree studies and serological characterization of three cis AB families are presented. Serums of these persons exhibit strongly reduced activities of A gene-specified alpha-acetylgalactosaminyltransferase and only trace activities of B gene-dependent alpha-galactosyltransferase.
mesh_terms: D000017:ABO Blood-Group System / Q000378:metabolism; D000373:Agglutinins; D001665:Binding Sites; D002250:Carbon Radioisotopes; D002874:Chromosome Mapping; D004912:Erythrocytes; D005260:Female; D005646:Fucosyl Galactose alpha-N-Acetylgalactosaminyltransferase / Q000032:analysis; D005690:Galactose / Q000378:metabolism; D006801:Humans; D008297:Male; D010375:Pedigree; D010641:Phenotype; D011044:Poland; D012463:Saliva / Q000032:analysis; D012703:Serotyping; D014166:Transferases / Q000032:analysis
chemical_list: D000017:ABO Blood-Group System; D000373:Agglutinins; D002250:Carbon Radioisotopes; D014166:Transferases; D005646:Fucosyl Galactose alpha-N-Acetylgalactosaminyltransferase; D005690:Galactose