FIGURE 5.

The relative abundance of microbial communities at the level of class (C, the group treated with saline; F, the group treated with influenza virus; the number followed C/F represented the day post inoculation). The majority of the OTUs were dominated by ten classes: Alphaproteobacteria, Gammaproteobacteria, Bacilli, Unidentified Actinobacteria, Clostridia, Bacteroidia, Mollicutes, Deltaproteobacteria, Betaproteobacteria, and Unidentified Gemmatimonadetes. Identities were established using sequence homology with 16S rRNA gene sequences. Different proportions of classes can be seen at different day post inoculation of the LRT. More than 85% of the reads belonged to these ten classes.