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Viability of MCF-7 (A), HCT116 (B) and A549 (C) cells after exposure to Pal/Alp or Pal+Alp (2.8 µM of each drug) measured by XTT assay. Untreated positive control containing only medium and treated cells were incubated for 24, 48, 72 or 96 h. Each bar represents mean ± standard deviation of six separate samples.
