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Expression of EDNRA and EDNRB-mRNA as determined by Real Time (TaqMan) PCR (mean ± SD) in canine pre-implantation uterus and utero-placental (Ut-Pl) compartments during pregnancy (A, C) and at aglepristone-induced parturition/abortion in mid-pregnant dogs (B, D). (B and D; compared with the mid-pregnancy group as a non-treated control). Bars with different letters differ at P < 0.05 in (A, B) or at P < 0.001 in (D).
