concentrations of progesterone , estrone , estradiol , and estrone sulfate from 23 d prepartum to parturition , and of 15-keto-13,14-dihydro-prostaglandin f2 alpha ( pgfm ) from 2 d prepartum to d 15 postpartum were measured by radioimmunoassay .
C0014942
estrone
C0059668
estrone