Experimental design. At least one year following transplantation of autologous retrovirally transduced CD34⁺ cells, each animal (95E003, panel A; and RQ2265, panel B) had baseline clonal analysis performed for 6 months prior to administration of cytokines. Granulocytes were collected at multiple time points before, during, and after cytokine treatments as shown and used for LAM-PCR analysis.