Research Article

Vaccination with Astragalus and Ginseng Polysaccharides Improves Immune Response of Chickens against H5N1 Avian Influenza Virus

Figure 1

Antibody titers of APS treated groups and control groups. Superscripts with different letters (a–d) differ significantly (). Group 1 = 100 mg/kg APS + vaccine. Group 2 = 200 mg/kg APS + vaccine. Group 3 = 400 mg/kg APS + vaccine. Group 7 = vaccine only. Group 8 = no vaccine, no APS (blank control).