Fig. 3From: Immune response enhancement by dietary supplementation with Caesalpinia sappan extract in weaned pigs challenged with porcine reproductive and respiratory syndrome virusEffect 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 groupsBack to article page