Anti-SS antibodies titers in T1, T2 and C groups immunized with C500 (ptCS/2SS-14-asd), C500 (ptCS/2SS-28-asd) and C500 (pCpG-asd), respectively at weeks 3 (first day after childbirth) and 7 (week 4 after childbirth) after primary immunization. Vaccinations were respectively orally given at weeks 0, 3 and 6 weeks after primary immunization. Data are presented as means ± SD. *p < 0.05.