Objective To investigate the immunogenicity and safety of alcohol extract of Taxus madia as adjuvant of influenza H3N2 virus vaccine in mice.Methods ICR mice were divided into five groups randomly,and injected i.m.twice with influenza H3N2 virus vaccine containing 1.2 μg of hemagglutinin(HA)and 0.2 mg of alcohol extract of Taxus madiaf,the vaccine containing 1.2 μg of HA and 0.2 mg of water extract of Taxus madia,the vaccine containing 1.2 μg of HA and 0.2 mg of aluminum hydroxide,adjuvant-free vaccine cont...