FIG. 2.

Unrooted neighbor-joining tree constructed with the 5′NCR nucleotide sequences from the in vitro-infected PBMC. The isolates are designated I (inoculum), IP (PBMC of the patient whose serum was used as the inoculum), D1 through D4 (PBMC from the four healthy donors infected in vitro with GBV-C/HGV), or PP (pool of cells from the four donors infected in vitro), followed by the clone number and, in parentheses, the number of clones bearing the same sequence. Bootstrap values are shown in the nodes of the tree.