Transcriptional profile of genes expressed in (i) UGE, (ii) in both UGE and Sca-1Hi and (iii) Sca-1Hi subsets relative to the Sca-1Neg subset.

Functional classification is shown for 146 mRNAs scored as increased relative to differentiated Sca-1Neg cells (Table S3). The average relative increases (fold change) from three comparisons is given in parentheses. When two values are presented in brackets following a gene, the first number represents the fold change in UGE, the second in Sca-1Hi. A mRNA that is present but not increased is denoted NC.*Bolded genes represent those that were validated by FACS or qPCR.**Specific E2f3-target genes.***Aldh activity is elevated in Sca-1Hi cells (Figure 3B).