Effects of Intrafollicular Administration of Gonadotropins in Two Species of Nonhuman Primates Using Laparoscopy

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Abstract
Direct administration of 0.5 IU of human chorionic gonadotropin (hCG) into the matured ovarian follicles of adult female Saimiri sciureus resulted in ovulation in 45% of the animals treated. When purified ovine luteinizing hormone (LH) was administered, ovulation was observed in 55% of the animals while intrafollicular injection of saline had no effect. Similar injections of hCG into matured follicles of Macaca fascicularis would not cause ovulation but did result in a 55% increase in mentrual cycle length. The necessity of a primate source of LH for inducing ovulation may be due to an intrafollicular mechanism.

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