Fig. 4From: M2 macrophages-derived exosomes regulate osteoclast differentiation by the CSF2/TNF-α axisCSF2 positively regulates TNF-α levels. (A) The interaction between CSF2 and TNF was predicted using the STRING database. (B) The protein levels of TNF, TRAF2, and FADD were detected using western blotting following CSF2 knockdownBack to article page