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Fig. 2. Endoglin marks the blast colony-forming cell. (A) A
representative FACS profile of a time-course analysis for endoglin and FLK-1
expression in Eng+/+ and Eng-/- ES
cells (day 0, d0) and EBs differentiated for 2, 3, 4 and 6 days. Fluorescence
intensity for endoglin is indicated on the y axis and for FLK-1 on
the x axis. (B) Gene expression analysis of
Eng+/+, Eng+/- and
Eng-/- ES cells during EB differentiation. (C)
Wild-type day 3 EBs were sorted based on expression of endoglin and FLK-1,
according to represented gates, as follows: ENG+FLK-1+,
ENG+FLK-1-, ENG-FLK-1+ and
ENG-FLK-1-. Resulting cell fractions were plated
immediately for blast colonies (BL-CFCs). Error bars indicate standard
deviations from two independent experiments performed in duplicate.
*, P<0.05 versus the other three cell fractions.