title: [Attempted determination of the frequency of the haptoglobin groups in the population of continental Portugal preliminary results].
mesh_terms: D006242:Haptoglobins; D009088:Mucoproteins / Q000097:blood*; D011174:Portugal
chemical_list: D006242:Haptoglobins; D009088:Mucoproteins
keywords: MUCOPROTEINS/blood