Neural Crest
Because of its great importance, the neural crest is sometimes considered a fourth germ layer. It is, however, derived from the ectoderm.
Read more about this topic: Germ Layer, Germ Layers
Famous quotes containing the word crest:
“What shall he have that killed the deer?
His leather skin and horns to wear.
Then sing him home.
Take thou no scorn to wear the horn,
It was a crest ere thou wast born;
Thy father’s father wore it,
And thy father bore it.
The horn, the horn, the lusty horn
Is not a thing to laugh to scorn.”
—William Shakespeare (1564–1616)