UQCC2 and infection: RAW264.7 cells induced with RANKL, treated with 5 μM M19 and infected with Lv-NC group showed that the ring structure of f-actin protein showed obvious fractures and the fluorescence intensity was weakened obviously, indicating that M19 significantly inhibited the osteoclastogenesis and Lv-NC infection had no significant effects on M19 inhibitory effects.