Fetal and placental development following surgical and non-surgical twinning in beef heifers.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004624:Embryo Transfer; D005260:Female; D005333:Fetus / Q000502:physiology*; D006128:Growth; D008722:Methods; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D014184:Transplantation, Homologous; D014427:Twins