Assertion: collagen | /r/HasProperty | known filler
Facets:
value: as a material
type: MANNER
value: in the medical field
type: LOCATION
Source sentences:
text: Although collagen is the best known filler, there are many other substances doctors can use to plump up your skin, including fat from your own body and synthetic materials.
text: Collagen is known for use in the medical field as a material for repairing tissue damage caused by thermal, chemical or mechanical trauma (see, e.g., "Collagen: Its Place