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Cell viability of fibroblast CCD-986sk cells after CopA3 treatment. Fibroblast cells were exposed to UVB for 1 min and treated with various concentrations of CopA3. Cell viability was measured by MTT assay. All experiments were performed in triplicate. Values shown are means ± SEM (n = 3). * p < 0.05 versus the control group.
