Assertion: endocardium's cell | /r/CapableOf | play role
Facets:
value: in definition
type: OTHER
value: in the epicardium
type: LOCATION
value: in secreting serous fluid
type: OTHER
Source sentences:
text: Mesothelial cells play a role in secreting serous fluid
text: In the epicardium, Mesothelial cells play a role in Definition