Immunophenotype of cells isolated from the spleens of mice that received transplants. Expression of the myeloid markers Gr1 and Mac1 and the lymphoid marker B220 on cells isolated from the spleen of representative animals that received transplants of BM cells transduced with different constructs as indicated. The proportion of positive cells within the EGFP⁺ or EYFP⁺ compartment is indicated.