these results demonstrate that both pfr-sv ( x ) and pzip-sv ( x ) were stably integrated and expressed in more primitive , multilineage , hematopoietic progenitor cells and suggest that the enhancer sequences of a vector affects expression of the transferred neomycin resistance gene when these cells differentiate to committed myeloid and erythroid cells .
C0018956
hematopoietic progenitor cells
C0007634
cells