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(A) H&E, Masson, IHC, and IF staining of lung sections from aged mice treated with different formulations (n = 6). The expressions of fibronectin (B), collagen I (C), and α-SMA (D) by WB (n = 6). RNA levels of Fn1 (E), Col1a1 (F), and Acta2 (G) (n = 6). Data are means ± SEM. *P < 0.05 and **P < 0.01.
