Fig. 2From: M2 macrophages-derived exosomes regulate osteoclast differentiation by the CSF2/TNF-α axisM2-exos suppress RANKL-induced osteoclast differentiation. (A) Raw264.7 cells were treated with RANKL and M2-exos, and osteoclast-like cells were observed using the TRAP staining assay. (B) TRAP, (C) NFATC1, and (D) Cathepsin K mRNA expression was detected using qPCR. **P < 0.01 vs. the control group. ##P < 0.01 vs. the RANKL groupBack to article page