FIG. 7.

Collector's curve (rarefaction) analysis of HCV sequences from each subject. Repeated sampling of sequence subsets was used to investigate whether additional sampling would likely yield additional OTUs. The numbers of sequences in sequence subsets are shown on the x axis, and the numbers of OTUs in the subset are shown on the y axis. OTUs supported by only one or two sequence reads were removed prior to rarefaction analysis. The amplicons studied were as follows: UTR (1A) (A), core (2A) (B), E1E2HVR1 (3A) (C), and E2 (4A) (D).