Journal of General Virology

Fig. 1. Bootscan analysis of full-length sequences of two recombinant BF viruses from Argentina. The horizontal axis represents nucleotide distance of the midpoint of the window from the 5´ end of the query sequence (nt 657 in HXB-2). The vertical axis represents the percentage of trees (using 100 bootstrap replicates) that support branching with the consensus subtype reference sequence. A 300 nt window advanced in 20 nt increments was used. Sequences were gap-stripped, transversion to transition ratio was set to 2.0, distances were calculated according to Kimura's two-parameter model and trees were constructed with the neighbour-joining algorithm.

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