Assertion: collagen | /r/HasProperty | harvested
Facets:
Source sentences:
text: The observed elastic spring constant for collagen in humans is 3.7-4.0 GPa , but this value will change significantly with various factors, such as age (of the body the collagen was harvested from), and pH.
text: Collagen is harvested from the leaves of CollPlant’s genetically engineered tobacco plants.