Survival percentages and weight loss changes of inoculated BALB/c mice or ferrets with H7N9 virus. (A) Three groups of ten mice were septely inoculated with 108, 107, or 106 TCID50 of H7N9 virus, and the percentages of mice that survived during the observation period were compared. (B) The body weight loss of mice inoculated with 106 TCID50 of virus. (C) Body temperature change of ferrets which were inoculated with either 108 or 106 TCID50 of virus. (D) Body weight loss of ferrets which were inoculated with either 108 or 106 TCID50 of virus. Data are presented as mean value ± SD.