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. Author manuscript; available in PMC: 2014 Sep 2.
Published in final edited form as: Vaccine. 2014 May 9;32(29):3617–3622. doi: 10.1016/j.vaccine.2014.04.083

Fig. 1. PRRSV-specific SN antibody titers following vaccination and challenge.

Fig. 1

Piglets were injected once with wt virus (G1), twice with wt virus (G2), once with mutant virus (G3), twice with mutant virus (G4), or sterile media (G5). The levels of serum neutralizingantibodies against PRRSV were measured using the wt virus and MARC-145. Asterisks indicate significant differences (P < 0.05) compared to the control group (G5).