Assertion: blood vessel's function | /r/HasProperty | reduced by more than 40%
Facets:
value: in the early morning
type: TEMPORAL
Source sentences:
text: After taking measurements of blood vessel expansion caused by the endothelium in the 30 study participants, researchers found that endothelial function was reduced by more than 40% in the early morning, but by late morning, its function returned to normal.