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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. 2. Viremia in the sera following challenge.

Fig. 2

The piglets were challenged following vaccination, and viremia was measured at different times. The 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). Asterisks indicate significant differences (P < 0.05) compared to the control group (G5).