Assertion: alkaloid | /r/ObjectUse | used throughout history
Facets:
value: in different regions around the world
type: LOCATION
value: in folk medicine
type: LOCATION
Source sentences:
text: Alkaloids have been used throughout history in folk medicine in different regions around the world.
text: Although alkaloids have been used throughout history, their isolation from plants as relatively pure compounds occurred only in the beginning of the 1800s, and their exact molecule structures were not determined until the 1900s.