title: Study of P50 in polycythaemia.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D004163:Diphosphoglyceric Acids / Q000097:blood; D006452:Hemoglobinometry; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000097:blood / Q000150:complications; D010100:Oxygen / Q000097:blood*; D011086:Polycythemia / Q000097:blood* / Q000209:etiology
chemical_list: D004163:Diphosphoglyceric Acids; D002245:Carbon Dioxide; D010100:Oxygen