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Ultrastructural study of in vivo produced ovine embryos: characterization of se...

The ultrastructure of in vivo produced ovine embryos, at the morula, early blastocyst and late blastocyst stages, was evaluated using transmission electron microscopy. In vivo produced embryos (n=14) were obtained from Portuguese Black Merino ewes, superovulated during Spring. Embryos were recovered by abdominal laparotomy, under general anesthesia, on day 6 or 7 after sponge removal. Embryos were processed for...