FIG 2.

Comparison of the archival DC RV VP7 genes to those of other strains. Maximum-likelihood intragenotypic phylogenetic trees were constructed using the VP7 gene nucleotide sequences. All horizontal branch lengths are drawn to scale (nucleotide substitutions per base), bootstrap values are shown as percentages for key nodes, and lineages/sublineages are labeled. The relative locations of archival and modern RV genes in each tree are indicated, and select RV strains are listed by name. Strains sequenced in this study are shown in red. (A and B) G1 VP7 gene trees were created using nucleotides 73 to 970. (C) G3 VP7 gene tree created using nucleotides 1 to 988. (D) G4 VP7 gene tree created using nucleotides 61 to 807.