title: The use of solid 13C nuclear magnetic resonance for the characterization of cholesterol and bilirubin pigment composition of human gallstones.
mesh_terms: D001663:Bilirubin / Q000032:analysis*; D002118:Calcium / Q000032:analysis; D002769:Cholelithiasis / Q000378:metabolism*; D002784:Cholesterol / Q000032:analysis*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D010860:Pigments, Biological / Q000032:analysis*
chemical_list: D010860:Pigments, Biological; D002784:Cholesterol; D001663:Bilirubin; D002118:Calcium