Fig. 3

Hybrid clone cells possess an increased colony formation capacity. Two M13SV1-EGFP-Neo controls are shown here because M13HS and M13MDA435 hybrid clones and M13MDA231 hybrid clones were independently analyzed from each other. Shown are the means ± S.E.M. values of at least three independent experiments. * = p < 0.05, *** = p < 0.01 (in relation to M13SV1-EGFP-Neo human breast epithelial cells); † = p < 0.05, †† = p < 0.01