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. 2021 May 18;14:513–524. doi: 10.2147/JAA.S307165

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© 2021 Li et al.

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MiR-21-5p in exosomes produced by LPS-treated macrophages promoted EMT of rat tracheal epithelial cells through TGFβ1/Smad signal pathway. The levels of epithelial cell adhesion factor and stromal cell markers and TGFβ1 were analyzed by Western blot (A and B) (n=3–4). The levels of epithelial cell adhesion factor and stromal cell markers, Smad7 and TGFβ1 were analyzed by Western blot (C and D) (n=3–4). Data were expressed as mean ± SD. *Indicates P < 0.05.