4Niels, Taekken, Foged. Pasteurella multicoda toxin the characterization of the toxin and its significance in the diagnostic and prevention of PAR in pigs [J]. A PMIS, 1992, (25)100: 51-56.
5Eric T, H, Andrew P, Peggy A, et al. Multiple roles for Bordetella lipopolysaccharide molecules during respiratory tract infection [J]. Infect Immun, 2000, 68: 6720-6728.
6Chanter N, Rutter J M, Mackenzie A. Partial purification of an osteollytic toxin from Pasteurella multocida [J]. J Gen Microbiol, 1986, 132: 1089-1097.
7Nagai S, Someno S, Yagihashi T. Differentiation of toxigenic from nontoxigenic isolates of Pasteurella multocida by PCR [J]. Clin. Microbiol, 1994, 32: 1004-1010.
8Hamilton T D, Roe J M, Hayes C M, et al. Contributory and exacerbating roles of gaseous ammonia and organic dust in the etiology of atrophic rhinitis [J]. Clin. Diagn. Lab. Immunol, 1999, 6: 199-203.
9Rutler J, Mackenzie M. A: Pathogenesis of atropic rhinits in pigs: A new perpective [J]. Vet Rec, 1984, 114: 89-90.
10Pedersen K B, Nielsen J P, Foged N T, et al. Atrophic rhinitis in pigs: proposal for a revised definition [J]. Vet Rec, 1988, 122(8): 190-191.