Assertion: ngf | /r/HasProperty | discovered by hamburger
Facets:
value: in two mouse sarcomas
type: LOCATION
value: in 1953
type: TEMPORAL
Source sentences:
text: Nerve growth factor (NGF) is a trophic peptide, discovered by Levi-Montalcini and Hamburger some 40 years ago 1,2
text: Nerve growth factor was first discovered by Levi-Montalcini, Hamburger, and Cohen in 1953 in two mouse sarcomas.