PROM1 and Stroke: EPC subsets in the stroke population were quantified at day 1, as follows: 0.02% (0.01-0.04) CD133+CD34+, 0.01% (0.001-0.02) CD133+VEGFR2+, 0.002% (0.0006-0.004) CD34+VEGFR2+ and 0.0009% (0.0003-0.0018) CD34+CD133+VEGFR2+ (medians and first and third quartile).