PLG and pulmonary fibrosis: On Day 35, lung fibrosis had a tendency to decrease in mice treated with plasminogen (2-way ANOVA, Holm–Šídák’s test, p = 0.0765), while on Day 42, there was a dramatic statistically significant difference in the lung fibrosis: 23.6 ± 6.4% of the fibrotic area in plasminogen-treated mice vs. 54.5 ± 3.0% of the fibrotic area in control mice (2-way ANOVA, Holm–Šídák’s test, p < 0.001) (Figure 9B).