Volume 7, Number 4—August 2001
THEME ISSUE
West Nile Virus
West Nile Virus
Partial Genetic Characterization of West Nile Virus Strains, New York State, 2000
Figure

Figure. . Phylogenetic relationships among West Nile virus strains collected in 2000. This tree is based on the 1503-bp envelope gene. Distance analysis based on Kimura 2-parameter distance including both transitions and transversions. Numbers at the nodes are bootstrap confidence estimates based on 500 replicates
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