免疲印迹( Western blot) Cells virus Cells buffer Media or Media or cell lysate cell lysate Electrophoresis Western blot using the ntibody against viral proteins Detection of viral proteins with antibodyWestern blot using the antibody against viral proteins Cells + virus Media or cell lysate Cells + buffer Media or cell lysate Electrophoresis Detection of viral proteins with antibody 免疫印迹（Western blot）