neural crest

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The part of the ectoderm in a vertebrate embryo that lies on either side of the neural tube and develops into the cranial, spinal, and autonomic ganglia.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun embryology A strip of ectodermal material in the early vertebrate embryo inserted between the prospective neural plate and the epidermis.