Assertion: ngf's role | /r/HasProperty | vital
Facets:
Source sentences:
text: In addition to apparently being essential to the survival of immature sympathetic neurons NGF seems to play a vital role in guiding nerve fibers toward their corresponding target organs.
text: The NGF synthesized in minute amounts in all vertebrate tissues, plays an essential role in the differentiation and survival of several nerve cell populations in the peripheral and central nervous system.