Galil A K
J Reprod Fertil. 1975 Dec;45(3):427-36. doi: 10.1530/jrf.0.0450427.
The role of the ovaries in the maintenance of pregnancy was studied in the ferret. Ovariectomy at the time of implantation showed that some embryos survived for 7 days after the operation but all were destroyed after 10 days, although the trophoblast continued to grow at a much faster rate than normal. Ovariectomy performed after implantation showed that no fetal development occurred when the ovaries were removed at Day 21 post coitum, but that fetuses developed for an appreciable length of time in animals ovariectomized on Days 23 to 27 post coitum. Ovariectomy in late gestation resulted in speedy expulsion of the fetuses. An increase in the placenta:fetus ratio did not alter the response to ovariectomy in late gestation. The uteri in all ovariectomized animals showed progestational endometria when examined shortly after explusion of the fetuses.
在雪貂身上研究了卵巢在维持妊娠中的作用。植入时进行卵巢切除术表明，一些胚胎在手术后存活了7天，但10天后全部死亡，尽管滋养层继续以比正常情况快得多的速度生长。植入后进行卵巢切除术表明，在交配后第21天切除卵巢时胎儿未发育，但在交配后第23至27天进行卵巢切除的动物中，胎儿发育了相当长的一段时间。妊娠后期进行卵巢切除术导致胎儿迅速排出。胎盘与胎儿的比例增加并没有改变妊娠后期对卵巢切除术的反应。在所有切除卵巢的动物中，在胎儿排出后不久检查时，子宫均显示出孕态子宫内膜。
