Mean AIV titers by quantitative real-time RT-PCR for each transport condition. Statistical significance (p ≤ 0.05) in differences among the amount of virus recovered by transport condition for each day post inoculation is indicated by different letters above the bars. Error bars represent standard deviation.
Spackman et al. BMC Veterinary Research 2013 9:35 doi:10.1186/1746-6148-9-35