Fig. 3From: Overexpression of TNFα induces senescence, autophagy and mitochondrial dysfunctions in melanoma cellsSenescence induction in engineered melanoma cells overexpressing TNFα. Melanoma cells A375hTNFa (a, middle), M4BeuhTNFa (b, middle) entering senescence and senescent parental melanoma cells after treatment with recombinant TNFα (100 ng/ml) (a, b, left panel). In colorectal carcinoma cells HT29hTNFa and HCT116hTNFa (c) senescence is not induced. Senescent cells are blue enlarged cells; β-galactosidase staining on day 6 of cultivation; light microscope images, scale bar: 100 μmBack to article page