Study on Construction and Experimental Immunity of Recombinant Vaccinia Viruses and Nucleic Acid Vaccine Plasmids of HIV-1 gp120;

Construction and identification of HBV full-length genome clone of Chinese strain;

Successfully established the PFGE molecular typing methods;and 22 epidemic strains in our province is divided into a number of bands.

To study the genetic diversity and genotype of the native prevailing strains,a 28S rDNA group I intron marker-based genetic analysis was performed on 40 fungal strains representing the native population of Beauveria bassiana in Huangshan Mountain region.

The epidemic strain O/YNGM/97 in China was identified to be foot-and-mouth disease virus(FMDV) type O using serological methods,and its biological and immunological characteristics were stu-died.

Four epidemic strains of H9N2 subtype avian influenza virus(AIV) from Beijing and Hebei province during 1998-2002 years were isolated,different inactivated vaccines were prepared with these isolates,and the cross protection of were carried out with SPF chickens.