Figure 4From: Cancer stem cells from a rare form of glioblastoma multiforme involving the neurogenic ventricular wallColonies were seen in clonogenic assay. Growth of normal NIH 3 T3 cells (A) and CD133-positive tumor cells (B) in soft agar shown in micrographs by phase contrast microcopy (4x). C: The numbers of colonies were counted in a view field with the 4x objective at 14 days of culture and plotted in bar graphs from three independent repeats.Back to article page