title: VARIATIONS IN HETEROZYGOUS EXPRESSION AT THE HAPTOGLOBIN LOCUS.
mesh_terms: D044383:Black People; D002021:Buffers; D002965:Classification; D004586:Electrophoresis; D005298:Fertility; D005796:Genes; D005826:Genetics, Medical; D005828:Genetics, Population; D006242:Haptoglobins; D006801:Humans; D009154:Mutation; D013781:Texas; D001741:Black or African American
chemical_list: D002021:Buffers; D006242:Haptoglobins
keywords: BUFFERS; CLASSIFICATION; ELECTROPHORESIS; FERTILITY; GENES; GENETICS, HUMAN; GENETICS, POPULATION; HAPTOGLOBINS; MUTATION; NEGROES; TEXAS