The initial stage in the development of the lens capsule in chick and mouse embryos.
D000818:Animals; D001485:Basement Membrane / Q000648:ultrastructure; D002454:Cell Differentiation; D002642:Chick Embryo; D005865:Gestational Age; D007908:Lens, Crystalline / Q000196:embryology* / Q000648:ultrastructure; D051379:Mice; D008854:Microscopy, Electron