Prostate epithelial side population. Prostate cells prepared from tissue specimens were analyzed for Hoechst 33342 dye efflux. The cytograms show (A) forward and side light scatter of the SP and non-SP populations as defined by (B) the dye efflux characteristics of the cells. Cytograms show the dye efflux characteristics of (C) the prostate cancer cell line C4-2 and (D) the breast cancer cell line MCF-7 used as positive controls.
Pascal et al. BMC Urology 2007 7:6 doi:10.1186/1471-2490-7-6