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Figure 3 | Reproductive Biology and Endocrinology

Figure 3

From: LH pulse frequency and the emergence and growth of ovarian antral follicular waves in the ewe during the luteal phase of the estrous cycle

Figure 3

Mean (± S.E.M.) daily serum estradiol (Panel A) and progesterone concentrations (Panel B) over the entire experimental period in cyclic Western White Face ewes treated every hour for 96 h, with GnRH (200 ng; IV; open circles; n = 7) or saline (black circles; n = 6), starting on Day 7 after ovulation (Day 7–11; indicated by an open rectangular box on the X-axis). Data were normalized to the day of ovulation (Day 0) in all ewes. Asterisks (*) indicate differences between ewes treated with GnRH and control ewes (P < 0.001).

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