Assertion: cartilage's matrix | /r/CapableOf | work as a lubricant and shock absorber
Facets:
value: for the bones
type: TRANSITIVE-OBJECT
Source sentences:
text: When exposed to growth factors the MSCs secrete an extracellular matrix (ECM), which works as a lubricant and shock absorber for the bones that meet and move against each other at the joints.