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The genomic DNA library of goose derived adenovirus (strain Y 81 G 4) was constructed after ten fragments of viral genomic DNA digested with Hin dⅢ were cloned into plasmid pUC18 respectively. The inserted fragments of the ten recombinant plasmids were labelled with digoxigenin. Viral genomic DNA ..., Abstract
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Preparation of infectious RNA by in vitro transcription from full length cDNA has led to advances in the study of many positive strand RNA viruses. There are two strategies of preparing full length cDNA of RNA viruses: (1)construction of infectious clone. (2)amplification of full length cDNA by ..., Abstract
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The shape, structure, structural polypeptides and restriction pattern of Parocneria orienta Nuclear polyhedrovirus (PaorNPV)was studied. Assayed by vertical slab SDS PAGE, polyhedrin treated by heat contained a single polypeptide with molecular weight of 31.5 kD, while polyhedrin untreated by heat ..., Abstract
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Recently, a novel virus named TT Virus has been identified in serum from patients with elevated ALT levels and others. TTV was detected by PCR using a set of primers from conserved region in the TTV genome. cloning and sequencing of the amplifications in 15 cases of Chinese blood donors and ..., Abstract
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A 1.66 kb expected S1 gene fragment of avian infectious brochitis virus (IBV) H strain was amplified by RT PCR. Its PCR/RFLP pattern was similar to IBV D 41 strain and M 41 strain when digested using BstYI, HaeⅢ and EcoRI respectively. IBV H strain was thought as Massachusetts serotype., Abstract
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The morphogenesis of the Grass Carp Reovirus (GCRV) was studied in CIK cells. The CIK cells were infected by the GCRV at MOI (multiplicity of infection) of 5 10 PFU/Cell. It was demonstrated that the subviral particles without outer layer proteins could be seen in the cytoplasm at 4 hours post ..., Abstract
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In order to investigate the stress response in the cells infected with Hantaan virus and the relationship between the expression of HSP70 and the virus replication, the Vero E6 cells infected with Hantaan virus (A9 strain) were detected by immunohistochemistry and in situ hybridization. The results ..., Abstract
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In order to investigate the stress response in the cells infected with Hantaan virus and the relationship between the expression of HSP70 and the virus replication, the Vero E6 cells infected with Hantaan virus (A9 strain) were detected by immunohistochemistry and in situ hybridization. The results ..., Abstract
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An isolate of rice stripe virus (designated as RSVYL) was purified. The particlesshowed to be pleomorphisms under electron microscope, mainly branched filamnts of about 80-250 nm in length and abeut 8 nm in width. There are also some open circular filaments of 3nm and 8 nm in width, and some ..., Abstract
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The fermentation broth of yeast strain SH\-2?(FSH\-2) which could enhance the biological potency of human interferon alpha (huIFN α) was detected. Its enhancing ratio was 1.64~6.86 fold. A group of proteins was seperated and purified from the fermentation supernatant by chromatography on ..., Abstract
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Bovine spumavirus (BSV) 3026 China strain, which was isolated by authors, encodes the transcriptional transactivator Borf 1. The Borf 1 protein, as well as the BSV3026, can transactivate the gene expression directed by bovine immunodeficiency virus long terminal repeat (BIV LTR) in transient ..., Abstract
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By conventional EM technique and DGD embedment free section EM technique together with the procedure of gentle extraction, the assembly and release of simian AIDS type D retrovirus (SRV) in infected Raji cells were studied. The results showed that SRV nucleocapsids were assemblied in some cytoplasm ..., Abstract
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Seven cases of chronic hepatitis B virus carriers were included for sequencing of whole gene sequences of hepatitis B virus(HBV).The serotype of 4 strains of HBV weYe adr,and 3 strains were adw.Two strains were dassifled to genotype B.an d the other 5 strains to genotype C.No significant ..., Abstract
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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 ..., Abstract
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Comparative studies on biological properties, physical and biochemical properties, morphology and serological relationships of five cucumber mosaic virus (CMV) isolates (PE,PE2,PEf,PC,PF) infecting Passiflora edulis, P. edulis × P.edulis var. flavicarpa, P.edulis var. flavicarpa, P.caerulea ..., Abstract
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Detection had been made for the levels of serum specificity IgA, IgE antibodie and specificity of virus antigens circulation immune complexes (CIC) on the different days or phases of illness and clinic types in patients of HFRS. The results showed that the level of specific IgA antibody was higher ..., Abstract
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Six of anti HIV 1 sero positive plasma derived from a local high risk population were investigated by RT PCR and cDNA sequencing. The results indicated that HIV 1 prevalent in a local high risk population belonged to HIV 1 subtype B. The sequences of nucleic acids and amino acids in V3 loop of 6 ..., Abstract
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