Percentages of GPI⁻ cells in mice who received a smaller number of fetal liver cells. (A-D) Four mice who received 0.5 million cells of the same pool of mosaic fetal liver cells were monitored for up to 27 weeks after transplantation. Percentages of GPI⁻ cells in various blood cells are shown. Percentages of Ly5.1-positive cells were higher than 90%.