The concentrations of bile salt, lecithin, and cholesterol were determined on each of 66 samples of gall bladder bile from patients with cholesterol gallstones and 25 samples of normal gall bladder bile. When these three constituents were plotted simultaneously on triangular coordinates, a complete separation of the normal and “abnormal” bile was achieved. This separation was the result of an increase in the quantity of cholesterol relative to the amounts of bile salts and lecithin contained in the bile from patients with cholesterol gallstones.


William H. Admirand, Donald M. Small


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