Figure 1
From: First case of highly pathogenic H5N1 avian influenza virus in Spain
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1746-6148-4-50/MediaObjects/12917_2008_Article_131_Fig1_HTML.jpg)
Phylogenetic analysis of the HA nucleotide sequence of some H5N1 strains. The A/great crested grebe/Basque Country.Spain/06* virus sequence was generated in this study. Phylogenetic analysis of the NA nucleotide sequence offered similar results with the A/great crested grebe/Basque Country.Spain/06* virus in a cluster that includes A/mallard/Italy/835/2006 and A/Cygnus olor/Czech Republic/5170/2006. The A/great crested grebe/Bavaria/22/2006 NA nucleotide sequence was not available.