Assertion: aldohexose's group | /r/HasProperty | linked to collagen
Facets:
Source sentences:
text: Glycosaminoglycans are organized in four groups - those found in connective tissue (linked to collagen) and they also act as lubricants for joints (hyaluronic acid in synovial fluid), as anti-clotting agents (heparin) and as components of mucus where they help to protect against infection.