Fig. 1From: Comparison of the porcine uterine smooth muscle contractility on days 12–14 of the estrous cycle and pregnancyA representative diagram showing spontaneous contractile activity and motor activity after acetylcholine (ACh) administration at doses 10−5 and 10−4 M in the endometrium/myometrium (ENDO+MYO) and myometrium (MYO) strips collected on days 12–14 of the oestrous cycle (Group I) or after first insemination (groups without embryos—Group IIa and with embryos—Group IIb)Back to article page