Clonal analysis of VEGFR2+ cells.

<p>A: schematic representation of experimental strategy. B: Examples of RT-PCR analysis on VEGFR2+ cells in absence and in presence of <i>Tbx1</i> pulse. C: Color map panels of marker positivity of individual clones with or without <i>Tbx1</i> pulse. D: Graphic representation of clone multiplicity, based on the number of positive markers with and without tetracycline. Blue represents the percentage of clones that were positive for all three markers; Red represents the percentage of clones positive for two markers; Green represents the percentage of clones that are positive for one marker.