Higher in vivo marking levels with Phoenix-GALV–derived vectors than with VSV-G–pseudotype lentiviral vectors in nonhuman primates.

(A) Representative example of a flow cytometric analysis of a control animal (no transplant; left panel) and animal M99267 on day 26 after transplantation (right panel). (B-D) Detection of transgene expression over time by flow cytometry in the peripheral blood of 3 baboons that received transplants of transduced CD34-enriched marrow. F99074 (B), F99310 (C), and M99267 (D).