Assertion: xylem's cell | /r/CapableOf | keep pace
Facets:
value: with the expanding central stelar region
type: LOCATION
Source sentences:
text: Extrastelar secondary growth: To keep pace with the expanding central stelar region and to maintain the area volume equilibrium between the stele and cortex, epidermis and pericycle, with parenchyma or collenchyma cells acquires secondary meristematic property by dedifferentiation and is called phellogen or cork cambium.