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Effect of delphinidin on the viability of androgen-independent prostate cancer cells PC3. Cells were treated with specified concentrations of delphinidin for 72 hours, and cell viability was evaluated by MTT assay as described in Materials and Methods. The values are shown as a percentage of cell inhibition while vehicle treated cells were regarded as 100% viability. Results are shown as mean ± SD of three different experiments. *P < 0.05 and **P <0.01 vs. control.
