Assertion: adult stem cell | /r/AtLocation | undifferentiated state
Facets:
value: throughout adult life
type: TEMPORAL
Source sentences:
text: Adult stem cells remain in an undifferentiated state throughout adult life.
text: And if the latter is true—which seems to be the case—exactly how do adult stem cells arise, and why do they remain in an undifferentiated state, when all the cells around them have differentiated?