Figure 2
From: The pathogenesis of low pathogenicity H7 avian influenza viruses in chickens, ducks and turkeys
Mean OP and CL virus shed titers from white leghorn chickens, Pekin ducks and broad-breasted white chickens by day PI as determined by quantitative real-time RT-PCR for the influenza M gene. Letters indicate statistical groupings among the 3 species for each day PI and swab type. Error bars indicate standard deviation of titers. Abbreviations CL = cloacal, OP = oropharyngeal.