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Trial 2—Antibodies titres. Measurements of antibody titres in vaccinated and non-vaccinated chickens. Challenge with S. Typhimurium (ST) was carried out in week 14 of life (red line). Blood samples were taken approximately every 10 days starting at week 5 of life, and after the challenge, samples were taken every three days until day 15 post-challenge, when all birds were euthanized. Sera were analysed by ELISA (Salm Gp B, Biochek).
