Fig. 2.
Surface prion protein expression by human CD34+ BM cells. Human BM aspirates were fractionated for low-density BM cells to enrich for multipotential stem cells. Cells were stained for CD34 and PrPC and analyzed by flow cytometry. Contour plot of low-density human BM cells shows that all CD34+ cells also express PrPC. Data were analyzed using gates for both high side scatter and CD34 expression.