title: Fy (a-b-) phenotype in Czechoslovakia.
abstract: A family of gypsy origin, with 5 Fy(a-b-) members was found in Czechoslovakia. The involvement of the silen allele, Fy, in paternity testing is discussed.
mesh_terms: D000483:Alleles; D001789:Blood Group Antigens; D003604:Czechoslovakia / Q000208:ethnology; D004375:Duffy Blood-Group System; D005796:Genes; D006801:Humans; D010641:Phenotype
chemical_list: D001789:Blood Group Antigens; D004375:Duffy Blood-Group System