title: The inconstant constant pK.
mesh_terms: D001784:Blood Gas Analysis / Q000379:methods*; D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D007477:Ions; D008433:Mathematics; D010100:Oxygen / Q000097:blood
chemical_list: D007477:Ions; D002245:Carbon Dioxide; D010100:Oxygen