title: Long-term storage of mouse embryos at--196 degrees C: the effect of background radiation.
mesh_terms: D000818:Animals; D001417:Background Radiation; D004622:Embryo, Mammalian / Q000528:radiation effects*; D005615:Freezing; D005720:Gamma Rays; D051379:Mice; D011839:Radiation, Ionizing; D014021:Tissue Preservation