Assertion: circulatory system's cell | /r/CapableOf | regulate blood flow
Facets:
value: by secreting various factors
type: MANNER
Source sentences:
text: The cells regulate local vascular tone and blood flow by secreting various factors that stimulate smooth muscle contraction (such as endothelin 1 and angiotensin-converting enzyme [ACE]) or relaxation (including nitric oxide [NO] and prostacyclin).