The influence of estradiol and progesterone on the concentrations of uterine oxytocin receptors and plasma PGFM in response to oxytocin in ovariectomized gilts Anita Franczak, Jaroslaw Staszkiewicz, Marek Koziorowski and Genowefa KotwicaReprod. Nutr. Dev., 42 4 (2002) 327-338DOI: https://doi.org/10.1051/rnd:2002029