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. 2010 Oct;16(10):1515–1523. doi: 10.3201/eid1610.100508

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Figure A1 — Phylogenetic relationships of the polymerase basic protein (PB) 2 (A) and PB1 (B) genes of influenza A (H5N1) viruses in Indonesia. All trees were generated by neighbor-joining in ClustalW (www.clustal.org). Numbers above or below branches indicate neighbor-joining bootstrap values. Analyses were based on nucleotides 1062–1923 (862 bp) and 94–1485 (1392 bp) of the PB2 and PB1 genes, respectively. Each tree was rooted to A/duck/Guangxi/50/2001. Colors indicate swine isolates (blue) and chicken isolates (red) most closely related to swine viruses. Scale bar indicates 0.01 nt substitutions per site. Ck, chicken; Dk, duck; Fl, feline; Gx, Guangxi; HK, Hong Kong; IDN, Indonesia; Qa, quail; ST, Shantou; Sw, swine.