Abstract:The aim of this study was to compare the mRNA levels of hormone receptor for progesterone (PR), oestrogen α (ER-α), oestrogen β (ER-β), and oxytocin (OTR) in canine morulae and blastocysts. Ten healthy mature bitches were inseminated based on monitoring vaginal cytology and progesterone concentration. The first insemination was performed on Day 2 after the preovulatory LH surge (progesterone 4 ng mL–1), and the second was performed 48 h later. All females were submitted to ovariohysterectomy (OVH), and the ovi… Show more
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