Meanwhile the characteristics of HAI gene was also analyzed.

Analysis of the Characteristics of HA1 Gene of Influenza Viruse Subtype A3 Isolated in Hubei Provine;

Expression of HA1 gene of avian influenza virus H7 subtype in recombinant baculovirus and analysis of antigenicity of the expressed HA1 protein;

Eukaryotic expression of HA1 gene of H5 avian influenza virus in insect cells and the antigenicity of the expressed protein;

To analyze the genetic characteristics of Yamagata-like strain of influenza B viruses isolated in Shenzhen in 2007, the HA gene of these viruses were sequenced and phylogenetic analysis of the sequencing data was performed with SIMMONIC and Mega software.

To understand the genetic characteristics of the hemagglutinin of influenza B virus prevalent in Fuzhou in 2006 and the evolutionary distribution of infection,viruses isolated from MDCK cells were typed and subtyped with hemagglutination(HA)and hemagglutination inhibition(HAI)tests,and the viral HA gene from viral RNA extracted from certain strains of virus was amplified by RT-PCR.

Following the rules of inheritance and variation in biology, different new product design can be considered as a certain kind of inheritance and viriation from standard components according to alike characteristic gene.