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Chromatographic Studies of Sera from Calves Vaccinated with Brucella Abortus, Strain 19

By Christine E. Rice, D. C. Alexander and B. B. Barrett

Abstract

The presence of antibody was detected by agglutination tests in the serum of calves four days after vaccination with Brucella abortus strain 19. Titres had reached a maximum by seven to ten days post-vaccination. Sucrose density-gradient ultracentrifugation demonstrated that the earliest antibodies were macroglobulins, IgM (19Sγ; γM)-globulins. Lighter antibodies, IgG (7Sγ2; γG)-globulins, appeared a few days later. With time, antibody titres fell, IgM declining somewhat more quickly than IgG. After revaccination some seven months later, there was a rapid rise in both IgM and IgG

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OAI identifier: oai:pubmedcentral.nih.gov:1494668
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