Fig. 11

H&E staining of mouse lung tissue at week 6 and 10 (n = 5–7). a Representative images for H&E staining on mouse lung tissues by week 10. Scale bar = 200 μm. b By week 6, both early and late hAEC treatment improved the tissue-to-air space ratio compared to saline-treated injured mice, but remained lower than controls. c By week 10, only early hAEC treatment significantly improved the tissue-to-air space ratio, while late treatment made no significant difference to the saline-treated injured mice. Data expressed as mean ± standard error of mean (SEM). Statistical significance determined with one-way ANOVA accompanied by the Bonferroni post-hoc test. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001. hAEC human amnion epithelial cell