Figure 6From: Astragalus polysaccharide enhances immunity and inhibits H9N2 avian influenza virus in vitro and in vivoIllustrates the percentages of CD8 + T cell lymphocyte expression before and after immunization in vivo . CD8+ expression for the 5mg/kg APS group was significantly lower prior to immunization, but increased to levels higher than all the other groups post-immunization.Back to article page