abnormal neural crest cell proliferation increased neural crest cell proliferation 2014-03-27T14:22:23Z MP:0012742 MPheno.ontology csmith enhanced NCC proliferation enhanced ability of the transient and migratory group of cells that emerge from the dorsal region of the neural tube and migrate to many peripheral locations to form various tissues of the adult to undergo rapid expansion by cell division enhanced neural crest cell proliferation increased NCC proliferation