Assertion: atherosclerosis's cause | /r/HasProperty | understood
Facets:
value: poorly
type: DEGREE
Source sentences:
text: The causes of plaque rupture are poorly understood, but responsible factors include expression of factors that weaken the fibrous cap, such as MMPs, enzymes (eg, myeloperoxidases) produced by inflammatory cells, high shear regions, stress points, macrophage calcification, and iron deposition.