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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Virus Res. 2010 Oct 21;155(1):240–248. doi: 10.1016/j.virusres.2010.10.014

Fig. 4.

Fig. 4

Virulence of NS mutants in mice. Viruses were inoculated intranasally at 105 PFU per mouse (n=4/group). Body weight was measured each day after inoculation. Wild-type virus killed 2 mice at day 9 (50% lethality), whereas none of the mutants killed any mice. Changes in body weight are shown.