Early selective depletion of CD34⁺hematopoietic progenitor cells and CFU-C by NL4-3. Data are shown from three pooled experiments at 8 different time points: three time points with 21 animals from one donor at days 4 to 11, three time points with 23 animals from three donors at days 12 to 14, and two time points with 13 animals from two donors at days 17 to 21. *Depletion values that are significantly different (P < .05, unpaired t-test) from the value for total thymocytes. (□) Total thymocytes per graft; (▨) CFU-C per graft; (▪) CD34⁺ cells per graft.