Beneficial effects of Vero cells for developing IVF bovine eggs in two different coculture systems MC Menck, C. Guyader-Joly, N. Peynot, D. Le Bourhis, RB Lobo, JP Renard and Y. Heyman Reprod. Nutr. Dev., 37 2 (1997) 141-150 DOI: 10.1051/rnd:19970202