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. 2011 Aug 18;6(8):e23791. doi: 10.1371/journal.pone.0023791

Figure 1. Prolongation of survival of passively immunized mice following challenge with wild-type H5N1 virus.

Figure 1

Groups of 7 or 10 CD1 mice received immune sera from (A) CD1 mice, (B) guinea pigs or (C) humans and survival was monitored for 14 days. Shown are the mean % of surviving animals each day following lethal challenge. Reciprocal neutralizing antibody titers shown are the means extrapolated from titers measured immediately prior to challenge. N  =  Naive serum. All mice receiving mouse immune sera of mean titer ≥1∶16 and guinea pig immune sera of mean titer ≥ 1∶43 were protected.