seventeen postmenopausal women were given a bolus of conjugated estrogens ( usp , premarin ) , 17 beta-estradiol and estriol orally , intravenously or by pellet implantation , and circulating levels of estrone , estradiol and/or estriol were measured by radioimmunoassay at various intervals during a 48 -- 72-h period .
C0014938
conjugated estrogens
C0699710
premarin