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Results for “OVULATION/physiology”

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Hypothesis concerning the role of follicular contractions in ovulation.

Autotransplants of ovarian tissue in the anterior chamber of the eye may be studied in the lightly anesthetized rabbit. Individual follicles in such implants, consisting of two to five follicles, have been observed to contract after subcutaneous injection of urine of pregnant women. after application of rat pituitary homogenate to the cornea, and 9 to 10 hours after cervical stimulation.

Animals↗

Neural timing of ovulation in immature rats treated with gonadotrophin.

Treated with Gonadotrophin Thirty-two-day-old female rats, injected two days previously with gonadotrophin from pregnant mares' serum, were given barbiturate at different times during the afternoon to determine whether the ovulation that would occur the next day could be blocked. The results indicate that ovulation depends upon release of pituitary ovulating hormone during a"critical period" between 2 and 4 P.M.

Animals↗