Fig. 3

Proliferation of normal colon and colon tumor cells incubated with MDEs. Cell proliferation of CCD 841 and LS123 cells grown in 10% FCS (10% FCS) or 0% FCS incubated with MDEs (0% FCS +EXO) or without (0% FCS) was examined by methylene blue staining (a, d) and MTT assay (cells were incubated for 24 h with MDEs) (b, e). Error bars represent SD (n = 5) (a, d) SD (n = 4) (b, d) *p < 0.05, **p < 0.01. Light microscope pictures of selected field cells (c, f)