Estradiol-17'beta' and oxytocin-induced prostaglandin F2'alfa' production at late luteal phase in cows - Castro e Paula, Luiz Augusto de; Bertan, Claudia M; Cunha, Pauline Martins da; Mogentale, Sabrina M; Bertholazzi, Angelo; Jorge, Priscila; Madureira, Ed Hoffmann; Binelli, Mário (Annual Meeting Society for the Study of Reproduction, 2004)