On bilirubin-metal complex compounds in relation to black pigments of gallstones.
D001663:Bilirubin / Q000378:metabolism*; D002625:Chemistry, Organic; D002769:Cholelithiasis / Q000209:etiology*; D003300:Copper / Q000378:metabolism*; D055601:Organic Chemistry Phenomena; D012964:Sodium / Q000378:metabolism*; D013053:Spectrophotometry
D003300:Copper; D012964:Sodium; D001663:Bilirubin