title: Variant of type B blood in an El Salvador family. Expression of a variant B gene enhanced by the presence of an A2 gene.
abstract: A variant of type B blood was found in three members of a family from El Salvador. In two members, both genotype BO, the blood and saliva had the characteristics of the phenotype Be1 . In the third member, genotype A2B, the red cell B antigen was stronger than in his BO genotype relatives. Thus, in this family, the presence of the A2 gene appeared to enhance the expression of the B gene.
mesh_terms: D000017:ABO Blood-Group System / Q000235:genetics*; D000328:Adult; D004544:El Salvador; D005260:Female; D014644:Genetic Variation; D006801:Humans
chemical_list: D000017:ABO Blood-Group System