Testing the antagonistic effect of follistatin on BMP family members in ovine granulosa cells Alice Pierre, Claudine Pisselet, Philippe Monget, Danielle Monniaux and Stéphane Fabre Reprod. Nutr. Dev., 45 4 (2005) 419-425 Accepted: 08 March 2005 DOI: 10.1051/rnd:2005031