Objective To study the expression of heat shock protein 70 (HSP70) of the murine embryo lung cells infected by murine cytomegalovirus (MCMV) in vitro and looking for a new approach to diagnose clinical virus infective disease.Methods The murine embryo lung cells were cultivated in vitro and harvested after MCMV infection (infective group)4?8?12?16?24?48?72?96 hours respectively.The expression of HSP70 was detected by immunohistochemistry and compared with control group.Results Expression of HSP70 enhanced o...