Figure 2. Antibody titres (IgM and IgG) in mice sera were measured on day 7 and day 14 after immunization. Data are mean ± S.E. of six animals. *P<0.05 and **P<0.01 compared with control group determined by one-way ANOVA (Bonferroni correction multiple comparison test). For experimental details refer to Materials and methods section.
