Fig. 4.
Composition of the human CD45+ cell population in chimeric SCID mice stained for the human markers shown in Fig 3. Results (average ± SD) are those of 23 mice in total, transplanted with unfractionated UCB (A), purified CD34+(B), CD34+CD38− (C), and CD34− (D) grafts derived from 5 UCB samples. The percentage of cells in each subset was expressed relative to the percentage of CD45+ cells present in the BM of each mouse. The percentage of chimerism ranged between 10% and 40% for the data shown in (A) through (C) and between 1% and 15% for the data shown in (D).