Platycoside E?is a platycodigenin-type saponin isolated from the root of Platycodon grandiflorum with haemolytic activity and adjuvant potential. Platycoside E promotes the production of the sera OVA-specific IgG2a and IgG2b antibody in the ovalbumin (OVA)-immunized mice.IC50 & Target: IC50: OVA-specific IgG2a and IgG2b antibody