Objective To observe change of cytoglobin( CYGB) expression and explore the protective role of CYGB during oxidative stress in macrophages. Methods Western blot was used to detect CYGB expression after 0. 5 mmol/L H2O2 treatment for 12 h.Cell model of CYGB overexpression and downexpression was constructed,then to observe the role of CYGB during oxidative stress.After treatment with H2O2 for 12 h,CYGB protein levels,lactate dehydrogenase(LDH) and malondialdehyde( MDA) were detected in each group. Result The expression of CYGB in H2 O2 ̄treated g...