title: Hp subgroups in the Polish population.
mesh_terms: D002852:Chromatography, Ion Exchange; D004592:Electrophoresis, Starch Gel; D005787:Gene Frequency; D006242:Haptoglobins / Q000032:analysis*; D006801:Humans; D010641:Phenotype; D011044:Poland
chemical_list: D006242:Haptoglobins