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. 1984 Aug;30(2):153-9.
doi: 10.1016/0010-7824(84)90099-4.

Biological, microscopic and scanning electron microscopic investigations of the effects of postinor /d-norgestrel/ in rabbits

G Ugocsai, B Resch, A Traub, M Sas

Biological, microscopic and scanning electron microscopic investigations of the effects of postinor /d-norgestrel/ in rabbits

G Ugocsai et al. Contraception. 1984 Aug.

Abstract

The contraceptive effect of d-norgestrel given immediately after copulation in various quantities was investigated in rabbits. It was established that the effect is dose-dependent. A correlation was found between the amount of dose administered and the changes taking place on the surface of endometrium. It can be suggested that d-norgestrel alters the surface of the endometrium to such an extent that nidation is unable to take place; therefore, it can be used for postcoital contraception at any time.

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