Long-term storage of frozen mouse embryos under increased background irradiation.
D000818:Animals; D001755:Blastocyst / Q000502:physiology; D004307:Dose-Response Relationship, Radiation; D004622:Embryo, Mammalian / Q000528:radiation effects*; D005615:Freezing; D005818:Genetic Engineering; D051379:Mice / Q000196:embryology / Q000235:genetics*; D011309:Preservation, Biological / Q000379:methods; D012098:Reproduction; D013997:Time Factors