Figure 2From: Cancer-initiating cells derived from established cervical cell lines exhibit stem-cell markers and increased radioresistance Immune phenotype analysis of cervical tumor sphere-forming cells. Sphere-forming cells and monolayer cells were stained with CD34, CD49f, and CD133 conjugated primary antibodies and subjected to flow cytometry. Red line corresponds to sphere-forming cells, green line to monolayer cells, and black line to isotype controlBack to article page