Fig. 4

Morphology of Caco-2 cells after treatment with and without Streptomyces sp. MUM265 extract. Comparison of the morphological features of Caco-2 after the 72 h incubation without Streptomyces sp. MUM265 extract (0.5% DMSO) (a) and with the extract (b, c and d) observed under an inverted microscope with objective lens × 40. Arrow indicates the abnormal morphological features resulted from the cytotoxic effect of MUM265 extract (b, c and d)