Fig. 2From: 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 clinical signs in pigs with or without PRRSV challenge. The data are shown as the mean ± SD. The asterisks indicate significant differences (* p < 0.05; ** p < 0.01; *** p < 0.001; **** p < 0.0001) between groupsBack to article page