Fig. 7From: Live-attenuated Salmonella enterica serotype Choleraesuis vaccine with regulated delayed fur mutation confer protection against Streptococcus suis in miceProtection in mice.Groups of 40 mice were orally immunized twice at 3‑weeks intervals with indicated strains. Half of the mice were challenged orally with 50×LD50 of C78-3 and the other half were intraperitoneally injected with 20×LD50 of SS2 at 2 weeks after the 2nd immunizationBack to article page