Segmental flexures of the notochord: artefact or not?
D000818:Animals; D000013:Congenital Abnormalities / Q000209:etiology*; D004210:Dissection; D004622:Embryo, Mammalian / Q000033:anatomy & histology*; D005314:Embryonic and Fetal Development; D006652:Histological Techniques; D051379:Mice; D012756:Sheep; D013131:Spine / Q000254:growth & development