Assertion: alimentary canal's cell | /r/HasAspect | folded cell surface membrane
Facets:
value: very
type: DEGREE
value: on the side
type: LOCATION
Source sentences:
text: The cells which make up the epithelium of the villi have a very folded cell surface membrane on the side nearest to the lumen of the small intestine; these little folds are called microvilli.