Objective:To observe effects of Maxing Shigan Decoction(MXSGD) on the protein levels of IL-2 and IL-4 of mice infected by A-type influenza virus in their serum and lung tissue.Methods: The mice model of pulmonary is established by nasal inoculating A-type influenza virus,Set up normal control group,model control group,Anti-virus particle group,ribavirin group,MXSGD clinical equivalent dose group,two times clinical equivalent dose group.After gavaging drug or normal saline,To detect the levels of IL-2 and IL-4 in serum and lung tissue.Result...