Macromolecular source as dependent on osmotic pressure and water source: effects on bovine in vitro embryo development and quality Paloma Duque, Carlos O. Hidalgo, Enrique Gómez, Belén Pintado, Nieves Facal and Carmen Díez Reprod. Nutr. Dev., 43 6 (2003) 487-496 DOI: 10.1051/rnd:2004007