Assertion: cartilage's matrix | /r/MadeOf | proteoglycan
Facets:
value: mainly
type: DEGREE
Source sentences:
text: Cartilage essentially consists of chondrocyte cells which produce an extracellular matrix consisting of collagen fibres, proteoglycan, and elastin fibres.
text: This matrix primarily consists of type II collagen and proteoglycans (PGs).
text: They produce and maintain the cartilaginous matrix, which consists mainly of collagen and proteoglycans.