Fig. 4. Intraalveolar and serum concentrations of interleukin (IL)-10 (A and B ) and IL-12p70 (C and D ) in the different patient groups before and after thoracic surgery. Data are displayed as ranges, medians, and interquartile ranges (25 to 75 percentile). The black dots indicate the outliers in each group. BAL = bronchoalveolar lavage; Post-op = postoperatively; Pre-op = preoperatively.