Fig. 1From: Mouse-adapted H9N2 avian influenza virus causes systemic infection in miceVirulence of G-P9, ZB-P14, and wild-type viruses in mice. Groups of five six-week-old BALB/c mice were inoculated intranasally with G1-P9, ZB-P14, or wild-type H9N2 viruses. Body weight (a) and survival (b) were monitored daily for 14dBack to article page