Assertion: adult stem cell | /r/HasProperty | rare
Facets:
value: within the body
type: LOCATION
value: relatively
type: DEGREE
value: in number
type: OTHER
value: often
type: DEGREE
Source sentences:
text: Pluripotent adult stem cells are rare and generally small in number, but they can be found in umbilical cord blood and other tissues.
text: Adult stem cells are rare.
text: Adult stem cells are rare.
text: This would allow the cells to be easily manipulated, although they are often relatively rare and difficult to grow in culture.
text: However, adult stem cells are rare within the body and it is not known whether they are present in some organs, such as the heart.