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DFO-induced HO-1 expression during osteoclastogenesis. (a) Western blot analysis showed that DFO could induce HO-1 protein expression in a dose-dependent manner. (b) qRT-PCR analysis showed that DFO could induce HO-1 mRNA expression in a dose-dependent manner. n=4, **P<0.01. (c) The stimulatory effect of DFO on HO-1 expression was demonstrated by immunofluorescence. Scale bars, 20 μm
