Assertion: ngf | /r/HasProperty | characterized since its discovery
Facets:
value: in the 1950s
type: TEMPORAL
Source sentences:
text: Nerve growth factor: from the early discoveries to the potential clinical use "The physiological role of the neurotrophin nerve growth factor (NGF) has been characterized, since its discovery in the 1950s, first in the sensory and autonomic nervous system, then in central nervous, endocrine and immune systems.