title: Atypical hatching of a cow blastocyst leading to separation of complete twin half blastocysts.
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000166:cytology*; D002417:Cattle; D002455:Cell Division; D005260:Female; D066298:In Vitro Techniques; D011247:Pregnancy; D013997:Time Factors; D014430:Twins, Monozygotic