Assertion: collagen | /r/AtLocation | human body
Facets:
Source sentences:
text: These are type 1 and type 3 collagens, which comprise more than 90% of all the collagen found in the human body and which perfectly work together as a powerful biological team that improves all basic body segments.
text: An estimated 90% of all collagen that is found within the human body consists of type I collagen.