Additional file 2: of Change over time of the mutagenicity in the lungs of gpt delta transgenic mice by extract of airborne particles collected from ambient air in the Tokyo metropolitan area

Figure S1. Alterations in the body weight (A, B and C), the lung weight (D, E and F) and relative lung weight (weight of lung / body weight (× 10− 3) by the administration of extracts (1980 extract, A, D and G; 1990 extract B, E and H; and 2010 extract, C, F and I). Horizontal axes indicate the dose of extract (mg). *P < 0.05, **P < 0.01 and ***P < 0.001 comparing to the control. (XLSX 64 kb)