Fig. 3From: Optimized protocol for double vaccine immunization against classical swine fever and porcine reproductive and respiratory syndromeEffects of different immunization protocols against CSF and PRRS on swine cellular immunity. (A) Stimulation indices of T lymphocytes at the indicated time points after vaccinations. The T-lymphocyte conversion rate for ConA was determined based on the stimulation index. (B) The T-lymphocyte conversion rate for CSFV+PRRSV was determined based on the stimulation index. Note: the bars are the respective standard deviation. Data are shown as the mean ± SD, and different letters (a, b, c) and (*) above the bars indicate significant differences (P < 0.05) as in Fig. 1; (ns) indicates no significant differences among S + PRRS, S-PRRS, PRRS-S and control groups within different immunization time (P > 0.1)Back to article page