Assertion: tissue's wall | /r/MadeOf | lignin
Facets:
Source sentences:
text: Mature sclerenchyma cells are usually dead cells that have heavily thickened secondary walls containing lignin.
text: Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin.
text: Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin.
text: Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin.