Lineage-depleted fetal liver cells or newborn bone marrow cells labeled with anti-CD34 and anti-kit or anti-kit and anti-Sca−1, followed by FDG labeling.

Histograms shown are from gated populations that were either Lin−/kit+/34+ or Lin−/kit+/Sca−1+. Negative controls (indicated by shaded peaks) are non-FDG-labeled fetal liver Lin− cells. In fetal liver (bold lines), the proportion of FDG(+) cells in the Lin−/kit+/34+ subset was 93.3%, and the Lin−/kit+/Sca−1+ was 79.8%, whereas in bone marrow (thin lines) they were 72.6% and 51.6%, respectively.