Figure 5From: Enhanced replication of avian-origin H3N2 canine influenza virus in eggs, cell cultures and mice by a two-amino acid insertion in neuraminidase stalk Changes in body weight of BALB/c mice after inoculation with influenza virus strains r-06 ( ) and r-06/NA2 ( ) and PBS as control ( ). The percent of body weight change was calculated from body weights of 10 mice recorded daily after infection relative to that at day 0 (pre-infection). *P < 0.05.Back to article page