FIG. 2.

Dendrogram obtained by neighbor joining based on 256 nucleotides within the C (core) regions of four HCV strains recovered in the investigations, two Swedish background strains, and 49 strains from GenBank. Genotypes are not given, since the analysis did not discriminate between strains belonging to different genotypes. The bootstrap value for the association of strains from patients 1:1 and 1:9 obtained from 1,000 replicas is given as a percentage at the fork formed by these strains. The strains investigated in this study (boxes) are identified by the numbers of the patients from which they were taken (see Table 1).