Fig. 1
Final body weights and lung weights of F344 rats exposed to titanium dioxide nanoparticles (TiO2 NPs) by inhalation (6.3, 12.5, 25, or 50 mg/m3, 6 h/day, 5 days/week, 13 weeks). Final body weights of male (A) and female (B) rats (n = 10). Absolute left lung weights in male (C) and female (D) rats (n = 10). The relative lung weights in male (E) and female (F) rats were calculated as a percentage of body weight (n = 10). Dunn’s or Dunnett’s multiple comparison test: **p < 0.01, and ***p < 0.001