Fig. 1.
Limiting dilution assays of adult BM and umbilical CB. (A) Southern blot analysis of human cell engraftment in the BM of mice transplanted with 1 to 8 × 106 BM cells. Mice were treated with alternate-day injections of human cytokines and killed 6 weeks posttransplant. Human:mouse DNA controls are given as percent human DNA. (B and C) Southern blot analysis of mice transplanted with 1 × 105 to 8 × 106 CB cells and killed after 6 weeks.
