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Fig. 3 | BMC Veterinary Research

Fig. 3

From: Immune response enhancement by dietary supplementation with Caesalpinia sappan extract in weaned pigs challenged with porcine reproductive and respiratory syndrome virus

Fig. 3

Effect of supplementation with CS extract on viraemia (A) and the number of PRRSV RNA copies (B) in the serum following PRRSV challenge. The data are shown as the mean ± SD. Asterisks indicate significant differences (* p < 0.05 and **** p < 0.0001) between groups

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