title: Equilibrium swelling of pigment gallstones: evidence for network polymer structure.
mesh_terms: D001704:Biopolymers; D002763:Cholecystectomy; D002769:Cholelithiasis / Q000378:metabolism*; D006801:Humans; D009994:Osmolar Concentration; D010860:Pigments, Biological / Q000032:analysis*
chemical_list: D001704:Biopolymers; D010860:Pigments, Biological