Assertion: cell wall's layer | /r/HasProperty | added
Facets:
Source sentences:
text: More layers may be added containing lignin in xylem cell walls, or containing suberin in cork cell walls.
text: More layers may be added containing lignin in xylem cell walls, or containing suberin in cork cell walls.
text: More layers may be added containing lignin in xylem cell walls, or containing suberin in cork cell walls.