Figure 3From: Novel genetic reassortants in H9N2 influenza A viruses and their diverse pathogenicity to miceSurvival percentage of mice infected with H9N2 viruses. Groups of mice (n = 4) were inoculated i.n. with each of eight H9N2 viruses at a dose of 107 EID50. The percent survival was observed daily for 14 days.Back to article page