F3.CD-TK cells (with high human nestin/hNestin IRL: red) also formed Cx43- or Cx26-containing gap junctions (immunostain color code: white) with G55 cells that had immunosignals for the main cancer stem cell (CSC) marker CD133 (green; i.e., cells showing yellowish overlapping pixels in Figure 1I,K) [34,35]. Here, PROM1 is linked to cancer.