FACS histograms of 4 bone marrow TER119(−) cells, after staining with FDG.

Fractions were sorted and cultured, as in Figure 3. Negative controls are shaded, and the dotted line peak in #1 represents FDG positivity of TER119(+) cells used as a positive control. Labels A-D correspond respectively to sample numbers 1-4 of bone marrows used for culture in Table 2. The proportions of FDG(−) cells were: A (#1), 75.2%; B (#2), 35.6%; C (#3), 50%; and D (#4), 69%.