title: Haptoglobin phenotypes in a group of mental retardates.
mesh_terms: D004591:Electrophoresis, Polyacrylamide Gel; D005006:Ethnicity; D006242:Haptoglobins / Q000032:analysis*; D006801:Humans; D008607:Intellectual Disability / Q000097:blood* / Q000453:epidemiology / Q000235:genetics; D010641:Phenotype
chemical_list: D006242:Haptoglobins