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  • Title: Specificity of the enzyme-linked immunosorbent assay (ELISA) for antibodies in the sera of specific pathogen-free lambs vaccinated with Pasteurella haemolytica antigens.
    Author: Donachie W, Burrells C, Dawson AM.
    Journal: Vet Microbiol; 1983 Apr; 8(2):199-205. PubMed ID: 6191429.
    Abstract:
    Pooled serum from specific pathogen-free (SPF) lambs vaccinated with sodium salicylate extracted (SSE) antigens of Pasteurella haemolytica serotype A1 was shown to contain antibody to other A serotype SSE antigens when tested by the enzyme-linked immunosorbent assay (ELISA). Specific antibody to serotype A1 SSE antigens was demonstrated by absorption of the serum pool with heterologous serotype SSE antigens. The type-specific antigens of serotypes A1 and A9 were prepared by phenol--water extraction (PWE) of their respective SSE antigens. The PWE antigens were examined in a sandwich ELISA where rabbit IgG anti-P. haemolytica A1 cells or A9 cells was used as a coating layer to bind PWE antigens. The specificity of these antigens was demonstrated by marked reduction of reactivity between serum from SPF lambs vaccinated with SSE of serotypes A1 or A9.
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