abnormal neural crest cell proliferation decreased neural crest cell proliferation decreased NCC proliferation reduced neural crest cell proliferation reduced 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 2014-03-27T14:22:23Z MPheno.ontology reduced NCC proliferation csmith MP:0012741