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Total number of classified sequences in each group of classified sequences which had 100 or more sequences (cluster numbers C1–C28; see supplementary fig. S2, Supplementary Material online for all clusters C1–C60). Blue (darker, on the left), nr/nt and ref sequences; pink (lighter, on the right), TSA sequences; +s, +ssRNA viruses; −s, −ssRNA viruses; and ds, dsRNA viruses.
