Figure 8From: Astragalus polysaccharide enhances immunity and inhibits H9N2 avian influenza virus in vitro and in vivoAntibody titers of chickens at 7 and 14 d post-vaccination with the H9N2 vaccine for different APS concentrations. Antibody titers were greatest for chickens in the 5mg/kg group at both 7 and 14 d post- vaccination with the H9N2 vaccine.Back to article page