Assertion: nicotine | /r/CapableOf | act as a tumor promoter
Facets:
value: as of 2012
type: TEMPORAL
Source sentences:
text: it is biologically plausible that nicotine can act as a tumor promoter, the existing body of evidence indicates this is unlikely to translate into increased risk of human cancer.
text: Although nicotine does not cause cancer in humans, it is unclear whether it functions as a tumor promoter as of 2012 .