title: Infra-red spectra of biliary calculi.
mesh_terms: D001663:Bilirubin / Q000032:analysis; D002254:Carbonates / Q000032:analysis; D002769:Cholelithiasis / Q000175:diagnosis*; D002784:Cholesterol / Q000032:analysis; D006801:Humans; D010710:Phosphates / Q000032:analysis; D013055:Spectrophotometry, Infrared
chemical_list: D002254:Carbonates; D010710:Phosphates; D002784:Cholesterol; D001663:Bilirubin