FIG 3 .

Genomic origin of all influenza virus small RNAs. Small red circles indicate the frequency and genomic locations of the starting nucleotide of vRNA-derived sequences recovered by deep sequencing, while small green circles represent the frequency and genomic locations of mRNA/cRNA-derived sequences for all eight influenza virus genome segments. The viral leRNAs, which start at nucleotide 1 of the vRNA, are indicated by a large red circle containing a small red circle. The data used were derived from cDNA library 2 (Table 1). All sequences are aligned on the basis of their 5′ ends, which are aligned to the left for the vRNAs and to the right for the viral cRNAs/mRNAs. The frequency is the number of viral sequence reads obtained that bear identical 5′ ends.