Percentage of infected mouse skin samples 2 or 7 days after UVC exposure.

For each treatment, the value represents the percentage of mice whose skin yielded to colonies measured with the CFU assay divided by the total number of samples.针对每一组处理，该数值代表经菌落形成单位（CFU）检测法证实皮肤可形成菌落的小鼠占总样本数的百分比。