Figure 6. Collagen levels in bronchoalveolar lavage fluid (BALF).

Collagen levels in BALF collected on the seventh and 28th day after intratracheal administration of bleomycin or saline. Knockout (KO) mice had significantly less pulmonary fibrosis compared with wild-type (WT) mice on the seventh day (n = 5 in each genotype, *p<0.05) and the 28th day (n = 5 in each genotype, **p<0.01). In saline-treated control mice, collagen levels were undetectable on both the seventh and 28th days.