Fig. 2

DNA damage by groups. Whisker plot displaying the levels of DNA lesions per Kb of genomic DNA in blood cells of stable COPD subjects and AECOPD subjects vs. the control group. Boxes represent the interquartile range extending from the first to third quartiles, with the horizontal line representing the median value. Whiskers or error bars represent the maximum and minimum values, respectively; x in the box shows the mean. B. Histogram showing the fold change in DNA lesions in the blood cells of control (n = 23), stable COPD (n = 18) and AECOPD (n = 11) subjects, as analyzed by LA‒qPCR. P values (unpaired two-tailed Student’s t test) vs. the control or stable COPD group are indicated