Assertion: stem cell | /r/CapableOf | divide able to differentiate
Facets:
value: to produce self-renew
type: PURPOSE
Source sentences:
text: Stem cells are distinguished from other cells by two characteristics: (1) they can divide to produce copies of themselves, or self-renew, under appropriate conditions and (2) they are pluripotent, or able to differentiate into most, if not all, mature cell types.