Positive index depicting collagen deposition on lungs of mice for CAE, BET, PFD after BLM – induced pulmonary fibrosis in mice model. Data were expressed as mean ± SEM with Dunnett’s multiple comparison test. N = 8, ####ρ < 0.0001 for BLM vrs naïve, ****ρ < 0.0001 for 50 mg/kg BET and 1000 mg/kg CAE vrs BLM, ***ρ < 0.005 for 25 mg/kg BET and 500 mg/kg CAE vrs BLM. Bleomycin induced group – BLM, Crinum asiaticum bulbs extract – CAE, Betulin – BET and Pirfenidone – PFD.