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To establish an enzyme-linked immunosorbent assay (ELISA) technique for the serological diagnosis of infections caused by Bordetella bronchiseptica (B. bronchiseptica) in guinea pigs, the authors recently assessed the usefulness of three antigen preparations derived from the bacterial cell components: sonication antigen (S-Ag), cell surface antigen (C-Ag) and lipopolysaccharide antigen (L-Ag). The use of S-Ag for ELISA resulted in the most sensitive detection of the antibody to B. bronchiseptica from guinea pig sera immunized with killed bacteria and sera derived from naturally infected guinea pigs. Like C-Ag, S-Ag was highly specific, showing no cross-reactivity with Pasteurella multocida. Assessment of antibody formations in animals with experimentally induced infection using the three antigen preparations revealed that the antibody to S-Ag was formed earlier than antibodies to the other two antigen preparations following growth of the bacterium in the lungs. These results indicate that ELISA with S-Ag as an antigen is a useful tool for the serological diagnosis of infection by B. bronchiseptica.

Determination of an Antigen Suitable for Enzyme-linked Immunosorbent Assay of the Antibody to Bordetella bronchiseptica in Guinea Pigs