Figure 2. Collage I and collage III protein expression in lung tissues detected by western blot analysis. Lane 1, control group; lane 2, PQ with concentrations of 50 μmol/L was selected for 24h; lane 3, PQ with concentrations of 50 μmol/L was selected for 48h; lane 4, PQ with concentrations of 50 μmol/L was selected for 72h; lane 5, PQ with concentrations of 100 μmol/L was selected for 24h; lane 6, PQ with concentrations of 100 μmol/L was selected for 48h; lane 7, PQ with concentrations of 100 μmol/L was selected for 72h; lane 8, PQ with concentrations of 150 μmol/L was selected for 24h; lane 9, PQ with concentrations of 150 μmol/L was selected for 48h; lane 10, PQ with concentrations of 150 μmol/L was selected for 72h; lane 11, PQ with concentrations of 200 μmol/L was selected for 24h; lane 12, PQ with concentrations of 200 μmol/L was selected for 48h; lane 12, PQ with concentrations of 200 μmol/L was selected for 72h.