Gall stones in sickle cell anemia are made up of?

Ans. is 'c' i.e. Bilirubin * In sickle cell disease, chronic hemolysis with its accelerated bilirubin turnover leads to a high incidence of pigment gallstones. They are composed primarily of bilirubin (insoluble bilirubin pigment polymer) and calcium (calcium phosphate) salts that are found in bile.