THE enterohepatic circulation of bile pigment has been the subject of protracted debate. Recirculation of bilirubin, and its bacterial reduction products, the urobilinoids, has been postulated and ...

It secretes a fluid called bile ... bilirubin exist in bile, they can precipitate out and form gallstones. When gallstones block the cystic duct from the gallbladder, bile cannot flow readily into ...