Assertion: viral vector | /r/CapableOf | express gfp
Facets:
value: stably
type: DEGREE
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.