Fig. 4From: Comparison of the porcine uterine smooth muscle contractility on days 12–14 of the estrous cycle and pregnancyInfluence of oxytocin (OT) on the tension (A) amplitude (B) and frequency (C) of the contraction of the porcine endometrium/myometrium (ENDO+MYO) and myometrium (MYO) strips collected on days 12–14 of the oestrous cycle (cyclic) or after first insemination) (groups without embryos and with embryos). Values (mean ± SD) represents five uterine horns examined in two strips from each one) and are expressed as a percentage of changes in the contractile activity before the treatment. *P < 0.05, **P < 0.01, ***P < 0.001 as compared to the contractile activity before the treatment; a, b, c indicates differences between groups (cyclic, without embryos and with embryos)Back to article page