Do humans have a neural crest?
5 for the otic sulcus (Ruberte et al. 1997). The mesencephalic is the first identifiable crest in the human. It appears at stage 9 (3 somites) and is visible up to stage 11, when it spreads out towards the frontonasal region and the eye, where it mingles with the optic crest (Müller & O’Rahilly, 1986)….