Fig. 2
From: Inflammogenic effect of polyacrylic acid in rat lung following intratracheal instillation
Body weight and relative lung after the instillation. A Time course of changes in the body weights of rats in each group. B Relative weight of the whole lung was calculated as a ratio of whole lung weight (g) to body weight (g) for each rat. The relative lung weight in the exposed groups were generally significantly heavier than in the control group in a dose dependent-manner throughout the observation period. Data are presented as mean ± SE (*p < 0.05, **p < 0.01)