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Influence of 15, 20, and 30 µM SFN on the proliferation of sensitive and cisplatin- and gem-citabine-resistant TCCSUP, T24, RT112, and RT4 bladder cancer cell lines. Evaluation by BrdU incorporation after 48 h. Error bars indicate the standard deviation. * indicates a significant difference compared to untreated controls set to 100%. n = 3.
