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. 2015 Apr 13;10(4):e0123113. doi: 10.1371/journal.pone.0123113

Fig 3. A27L-specific cell-mediated immune response against recombinant VVWR determined by ELISPOT analysis.

Fig 3

(A) Each group consisted of four female Balb/C mice immunized three times, two weeks apart via intramuscular injection as follows: Naïve (negative control), pVax1 (empty vector backbone control), pA27L (VVWR envelope protein), pA27L+I (VVWR envelope protein + imiquimod), pA27L + R (VVWR envelope protein + resiquimod), pA27LOPT (optimized sequence of the A27L gene) and pA27LOPT+I (the optimized sequence of A27L + imiquimod). (B) Identification of A27L dominant epitopes. Antigen-specific IFN-γ ELISPOT in splenocytes from mice (immunized three times, two weeks apart via intramuscular injection) in response to VVWR A27 individual 3-mer overlapped 15-mer overlapping peptides. Each experiment was performed three times and the immune responses among groups of mice are presented as the mean ± standard error of the mean (SEM). A p value of less than 0.05 was considered significant.