Assertion: viral vector | /r/CapableOf | label cell
Facets:
value: to track them
type: PURPOSE
value: permanently
type: MANNER
value: to track their progeny
type: PURPOSE
Source sentences:
text: Viral vectors, especially retroviruses, stably expressing marker genes such as GFP are widely used to permanently label cells to track them and their progeny, for example in xenotransplantation experiments, when cells infected in vitro are implanted into a host animal.