Early exposure to the steroid sex hormone testosterone and its estrogen metabolite estradiol masculinize neural tissue during a developmental critical period. Many aspects of neuron anatomy and physiology are permanently altered, including later sensitivity to estradiol. Although it is well established that early hormone exposure alters neuronal responsiveness regarding classical estradiol acti...

The present study was undertaken to investigate the aromatization capability of pig corpora lutea at different stages of the luteal phase using the nonsteroidal aromatase inhibitor CGS 16949A. Luteal cells were collected during early (0-2 days after ovulation), mid- (7-10 days after ovulation) and late (13-16 days after ovulation) luteal phase. Cells were incubated either with or without 10(-7)...

the catalyst pt-ta supported on 7-alumina was prepared by impregnation with solution containing compoundsof ii21k1.0. and ta205 the pt concentration was kept constant at 0.2 vet% while the concentration of thetantalum was 0,4 wt%. the activity and selectivity of catalyst were determined under conditions at 450-500 °cand 15-30 atm.. with molar ratio h2/c[h,e5 and wh=1.5ml/h for converted n-hepta...