Assertion: cartilage's matrix | /r/MadeOf | collagen fibers
Facets:
value: hard
type: DEGREE
Source sentences:
text: surrounded by a hard matrix which contains CALCIUM SALTS and COLLAGEN FIBERS -very hard to protect and support body organs
text: The matrix also contains fibroblasts, macrophages, collagen fibres and elastic fibres.
text: The matrix of bone contains collagen fibers and mineral deposits.
text: The extracellular matrix of the fibrocartilage and hyaline cartilage contain collagen fibers.