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LGR5-overexpressing cervical cancer cells exhibit enhanced self-renewal capacity. (a) Representative photos of tumorspheres formed by LGR5-overexpressing and LGR5-knockdown SiHa and HeLa cells. Bar, 50 μm. (b, c) The number of tumorspheres/200 cells was counted from three consecutive passages. (d) The number of wells containing tumorspheres was counted. *P<0.05; **P<0.01; ***P<0.001. Data represent mean±S.D. of triplicate experiments
