Assertion: ngf's effect | /r/HasProperty | protective
Facets:
Source sentences:
text: For NGF to be viewed as a specifically expressed, neuroprotective molecule with widespread activity in the CNS, several criteria must be fulfilled: (a) NGF and NGF receptor expression must occur in cellular compartments where it could influence the neural response to injury; (b) NGF signaling should be able to influence cellular events involved in the response to insults and injury; (c) NGF should exert protective effects; and (d) failure of NGF signaling should be associated with increased degeneration and vulnerability to injury.