Fig. 4From: 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 the antibody titer in pigs following PRRSV challenge. The data are shown as the mean ± SD. Asterisks indicate significant differences (* p < 0.05; ** p < 0.01) between groupsBack to article page