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Representative western blots of (a) p-65, (b) Nrf2 and (c) SIRT1 in HDFs treated with mock control, PCM-conditioned medium, 1 μM NMN or 100 nM Q10 following incubation with PCM. The relative ratio of protein to total protein levels is presented as the mean ± SD (B). Fold change of control, *** p < 0.001. Fold change in PM-conditioned medium, # p < 0.05, ## p < 0.01.
