title: Interactions of early mouse embryos with oncogenic viruses--simian virus 40 and polyoma. I. Ultrastructural studies.
mesh_terms: D000818:Animals; D001755:Blastocyst; D002454:Cell Differentiation; D002455:Cell Division; D004622:Embryo, Mammalian; D005260:Female; D051379:Mice; D008854:Microscopy, Electron; D010063:Ovum; D011120:Polyomavirus; D013539:Simian virus 40; D014412:Tumor Virus Infections; D014779:Virus Replication