MIGLINO, Maria Angélica; RUMPF, R.; AMBRÓSIO, Carlos Eduardo; et al. Placentation in cloned cattle: structure and microvascular architecture. Theriogenology, New York, v. 68, n. 4, p. 604-617, 2007. Disponível em: < http://www.sciencedirect.com/science/journal/0093691X > DOI: 10.1016/j.theriogenology.2007.04.060.