Figure 1

Phylogenetic tree constructed from sequences of the HCV-4 core protein using neighbor-joining algorithm method. Bootstrap values corresponding to 1000 replications are indicated below the branches and only bootstrap values > 50% were included. Elongated triangles represent the compressed subtrees with captions indicating HCV isolates and references. The thickness of the triangles is proportional to the number of taxa included and the length of the triangle corresponds to the respective diversity.