title: Cation levels in human breast cyst fluid.
mesh_terms: D001941:Breast Diseases / Q000378:metabolism*; D005260:Female; D005348:Fibrocystic Breast Disease / Q000378:metabolism*; D006801:Humans; D011188:Potassium / Q000032:analysis*; D012964:Sodium / Q000032:analysis*
chemical_list: D012964:Sodium; D011188:Potassium