Expression of pluripotent stem cell markers by SCLC CTCs and cell lines. The figure shows the panel of pluripotent stem cell markers of 2 SCLC CTCs and several SCLC cell lines as determined by Western blot arrays. BHGc7 and BHGc10 together with GLC16 exhibited significantly higher expression of HNF-3β/FOXA2 compared to the other cell lines. Other markers included in this array, SOX17, α-fetoprotein, OCT-3/4, KDR, Otx2, GATA-4, Nanog, HCG, TP63 and Goosecoid showed no significant expression were not included here. Data for Vimentin were supplemented from ARY026 arrays.