Cross section scheme of vertebrate embryo. 1 – neural crest, 2 – neural tube, 3 – dorsal somite, 4 – notochord. Both paths of the neural crest cells migation marked by arrows: red one is the dorsolateral path, blue one signs the ventromedial path.
Neuralcrestroute.jpg
Neuralcrestroute.jpg: Original uploader was Rockpocket at en.wikipedia
derivative work: Mithril (talk)