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Corpora lutea of ewes bearing ovarian autotransplants were infused for 4 h with prostaglandin F2alpha (PGF2alpha) (10 microng/h), PGF2alpha+PGE2 (10microng/h of each), PGE2 (10 microng/h) or saline on day 10 of the cycle. Ovarian venous blood obtained before, during, and up to 12 h after the infusion period, was assayed for progesterone. Prostaglandin F2alpha produced an immediate, rapid and sustained decline in progesterone secretion, but infusion of PGE2 together with PGF2alpha prevented the decline until after the infusion. Progesterone secretion was unaffected by infusion of PGE2 alone. Oestrous behaviour was observed in four out of seven animals infused with PGF2alpha but in only one out of six infused with PGF2Alpha+PGE2. None of the animals infused with PGE2 alone or saline only came into heat.
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R J Scaramuzzi, and
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K M Henderson, and
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K M Henderson, and
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K M Henderson, and
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K M Henderson, and
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K M Henderson, and
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K M Henderson, and
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D T Baird
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K M Henderson, and
R J Scaramuzzi, and
D T Baird
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K M Henderson, and
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D T Baird
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K M Henderson, and
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