The results showed that the nucleotide homology between spleen virus and Shimen was 99.4%,the aminoacid homology 99.0%,the nucleotide homology between cultured cell virus and Shimen 98.3%,the aminoacid homology 96.7%.
The results showed that the nucleotide homologybetween spleen virus and Shimen was 99.4 %,theaminoacid homology was 99.0 %,the nucleotide homology between cultured cell virus and Shimen was 98.3 %,theaminoacid homology was 96.7 %,so we educed that after poly-passaging and Cytopathogenic effect,E2 genes of CSFVwere geneticallystable.
The results showed that the nucleotide homology between spleen virus and Shimen was 99.4%,the aminoacid homology was 99.0%. It was showed epitopes of all strains were not variable obviously by analysising the variation of some main amino acid residues substitutions of E2 gene main antigenic domains.
3. Cells inoculated by shimen virulent strain and C strain of CSFV and control cells(notinoculated)at 24h,56h were observesed by transmission electron microscopy after fixationwith methyl aldehyde respectively.
Summary 1.The cell-cultured lapinized strain of swine fever virus was sucessfully propagated on PK primary cell monolayer in rolling bottles, LHHank's solution containing horse or calve serum was used as the medium and no antibiotics were added. The inoculum was a 0.3% of 1:10 spleen suspension of infected rabbit or a 2—4% cell cultured virus. After cultivation at 36℃ the media were havested and changed every 4 days. The titre of havested virus in every run were 2x10~4-5x10~4 in terms of rabbit infective t...
This paper related to a special nerve symtom which was occured from 1950-1951 after the yaks were immune to lapinized rinderpest virus, when yak rinderpest greatly prevailed throughout Qinghai province. When the prevention could not prcceed and a kind of vaccine is urgent in need, a series of scientific research were started. It turned out that when the yaks were inoculated in laboratory with lapinized virus, 16.1% yaks had nerve symtom, the reaction of immunity was also serious, though 10,000 times diluted...
The envelope glycoprotein E0 gene of hog cholera virus (HCV) strain C was amplified from total RNA extracted from HCV strain C infected rabbit spleen by reverse transcription and nested PCR. The PCR product was cloned into pGEM T vector. Nucleotide sequencing was performed using an ABI PRISM sequencing device. Based on the incorporation of fluorescence labelled dideoxynuclotide teminators, the sequence was compared with HCV strain C sequenced by Moormann et al . The result showed that their homologies o...