Assertion: meristem's cell | /r/HasProperty | essential
Facets:
value: for meristem maintenance
type: PURPOSE
Source sentences:
text: Cells of this zone have a stem cell function and are essential for meristem maintenance.
text: Cells of this zone have a stem cell function and are essential for meristem maintenance.
text: Cells of this zone have a stem cell function and are essential for meristem maintenance.