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Effect of MSC‐EXO on hypoxia‐PAEC in vitro. A, the protein expression analysis of Wnt5a, Wnt11, β‐catenin and cyclin D1 by Western blot. B, Detection of Wnt5a mRNA expression in PAEC and PASMC by PCR. C, Detection of Wnt5a protein expression in PAEC and PASMC by Western blot. **P < 0.01 vs Normal group
