the ratio was determined in several groups of patients : ( a ) patients with cerebrotendinous xanthomatosis ( in serum , cerebrospinal fluid and tendon biopsy ) , before and during chenodeoxycholic acid therapy , ( b ) patients receiving cholestyramine therapy ( in serum ) , ( c ) patients suffering from various liver diseases ( in serum ) and ( d ) one patient before and after liver transplantation ( in serum ) .
C0008024
chenodeoxycholic acid
C0023895
liver diseases