Figure 2.

Salmonella Enteritidis-specific antibody titers induced by vaccination. Blood samples were collected at (a) three weeks after prime vaccination, and (b) two weeks after booster vaccination. Serum was isolated from the blood and S. Enteritidis-specific antibody titers were measured with a commercial ELISA kit. Each bar represents the mean sample to positive (S/P) ratio. Oral/IM, prime-boost vaccinated group with the candidate strain via oral–intramuscular route; IM/Oral, prime-boost vaccination with the candidate via intramuscular–oral route. * p < 0.05; ** p < 0.005.