The effect of endotoxin-contaminated medium on in vitro fertilization and development of bovine oocytes matured in vitro V. Madison, T. Greve, B. Avery, T. Wamberg, V. Mortensen, M. Balle and R. Høier Reprod. Nutr. Dev., 31 2 (1991) 159-165 DOI: 10.1051/rnd:19910206