Effect of ionizing radiation on the development of the thymus gland.
D000818:Animals; D001284:Atrophy; D005260:Female; D005333:Fetus / Q000528:radiation effects*; D005865:Gestational Age; D051379:Mice; D008807:Mice, Inbred BALB C; D011247:Pregnancy; D013950:Thymus Gland / Q000473:pathology / Q000528:radiation effects* / Q000648:ultrastructure