Early organization of the central nervous system: form and pattern.
D000818:Animals; D001001:Anura / Q000196:embryology; D001369:Axons / Q000502:physiology; D001921:Brain / Q000196:embryology; D002490:Central Nervous System / Q000196:embryology*; D002633:Chemotaxis; D004475:Ectoderm; D005399:Fishes / Q000196:embryology; D008648:Mesoderm; D008959:Models, Neurological; D009434:Neural Pathways; D009474:Neurons / Q000145:classification