Assertion: ngf's effect | /r/HasSubevent | elongation
Facets:
value: directly
type: MANNER
Source sentences:
text: On the basis of these test-tube findings we have hypoth­esized that the massive formation of microtubules and microfilaments in the developing sympathetic neuron is triggered by NGF, and that this effect may lead directly to the growth and elongation of the nerve fiber.