Assertion: xylem's cell | /r/HasProperty | thickened
Facets:
value: highly
type: DEGREE
value: at the corners
type: LOCATION
Source sentences:
text: The cells of these tissues are thickened at the corners due to the accumulation of pectin and cellulose.
text: Endodermal cells are highly thickened Casparian strips are visible only in young roots.