1Tivendale K A,Noormohammadi A H,Allen J L,et al.The conserved portion of the putative virulence region contributes to virulence of avian pathogenic Escherichia coli[J].Microbiology,2009,155(Pt 2):450-460.
2Ozawa M,Harada K,Kojima A,et al.Antimicrobial susceptibilities,serogroups,and molecular characterization of avian pathogenic Escherichia coli isolates in Japan[J].Avian Dis,2008,52(3):392-397.
3Skyberg J A,Johnson T J,Johnson J R,et al.Acquisition of avian pathogenic Escherichia coli plasmids by a commensal E.coli isolate enhances its abilities to kill chicken embryos,grow in human urine,and colonize the murine kidney[J].Infection and Immunity,2006,74(11):6287-6292.
5Johnson T J,Wannemuehler Y,Doetkott C,et al.Identification of minimal predictors of avian pathogenic Escherichia coli virulence for use as a rapid diagnostic tool[J].J Clin Microbiol,2008,46(12):3987-3996.
6Lefebvre B,Gattuso M,Moisan H,et al.Genotype comparison of sorbitol-negative Escherichia coli isolates from healthy broiler chickens from different commercial farms[J].Poult Sci,2009,88(7):1474-1484.
7Oguttu J W,Veary C M,Picard J A.Antimicrobial drug resistance of Escherichia coli isolated from poultry abattoir workers at risk and broilers on antimicrobials[J].J S Afr Vet Assoc,2008,79(4):161-166.
8Chuba P J,Leon M A,Banerjee A,et al.Cloning and DNA sequence of plasmid determinant iss,coding for increased serum survival and surface exclusion,which has homology with lambda DNA[J].Mol Gen Genet,1989,216(2/3):287-292.
9Johnson T J,Giddings C W,Horne S M,et al.Location of increased serum survival gene and selected virulence traits on a conjugative R plasmid in an avian Escherichia coli isolate[J].Avian Dis,2002,46(2):342-352.
10Johnson T J,Wannemuehler Y M,Nolan L K.Evolution of the iss gene in Escherichia coli[J].Appl Environ Microbiol,2008,74(8):2360-2369.
2Janben T, Schwarz C, Preikschat P, et al.Virulence-associated genes in avian pathogenic Escherichia coli (APEC)isolated from internal organs of poultry having died from colibacillosis [J]. Int J Med Microbiol, 2001, 291(5):371-378.
3Marc D, Dho-Moulin M. Analysis of the fim cluster of an avian 02 strain of Escherichia coil: serogroup-specific sites within fim A and nucleotide sequence of fimI [J], J Med Microhlol, 1996 ,44 (6):444-452.
4Dho-Moulin M, Fairbrother. Avian pathogenic Escherichia coil(APEC)[J]. J Vet Res, 1999, 30(2-3):299-316.
5Fantinatti F, Silveira W D, Castro A F. Characteristics associated with pathogenicity of avian septicaemic Esche Hchia coil strains [J]. Vet Microbiol, 1994, 41(1-2):75-86.
6Ramirez Santoyo R M, Moreno Sala A, Almanza Marquez Y. Avian Escbericbia coil virulence factors associated with coil septicemia in broiler chickens[J]. Rev Argent Mecrobiol, 2001, 33(1):52-57.
7Wooley R E,Spears K R,Brown J,et al.Relationship of complement resistance and selected virulence factors in pathogenic avian Eseheriehia coli[J]. Avian Dis, 1992, 36(3):679-584.
8Janben T, Schwarz C, Preikschat P, et al. Virulenceassociated genes in avian pathogenic Escherichia coli (APEC) isolated from internal organs of poultry having died from colibacillosis [J]. Int J Med Microbiol, 2001, 291(5):371-378.
9Dho-Moulin M, Fairbrother J M. Avian pathogenic Escherichia coli(APEC)[J]. J Vet Res, 1999, 30(2-3) :299-316.
10Fantinatti F, Silveira W D, Castro A F. Characteristics associated with pathogenicity of avian septicaemic Escherichia coli strains[J]. Vet Microbiol, 1994, 41(1-2) :75-86.
