Groups Lung index Inflammatory score   Fibrosis score G1 4.23 ± 0.05 b 0.0 ± 0.0 c 0.0 ± 0.0 c G2 7.86 ± 0.19 a 5.5 ± 0.18 a 6.75 ± 0.16 a G3 4.47 ± 0.12 b 2.37 ± 0.18 b 3.50 ± 0.19 b G4 4.25 ± 0.04 b 0.0 ± 0.0 c 0.0 ± 0.0 c

Table 2: Effect of ATRA and/or bleomycin treatment on lung index, inflammatory and fibrosis score in treated rats. Values are the means of 8 replicates ± SD. For each parameter, different letters indicate significant differences at P ≤ 0.05 as determined by Duncan’s multiple range tests.