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Cytotoxicity of cyano enone-containing semisynthetic triterpenoids (SM, TM) and steroids (pi-153, pi-156) with respect to murine melanoma B16 (A) and human lung adenocarcinoma A549 (B) cells. The cells were treated with mentioned compounds for 48 h followed by the measurement of cell viability by 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. Error bars represent the standard deviation of three independent experiments performed in tetraplicate.
