simultaneous administration of ( 2,2,4,4-2h4 ) deoxycholic acid , ( 24-13c ) cholic acid and ( 24-13c ) chenodeoxycholic acid and isotope ratio measurements in serum permitted determination of pool sizes and fractional turnover rates of the three major bile acid and the 7 alpha-dehydroxylation fraction .
C0011479
deoxycholic acid
C0008024
chenodeoxycholic acid