Skip to main content
Figure 1 | Virology Journal

Figure 1

From: Avian influenza A (H9N2): computational molecular analysis and phylogenetic characterization of viral surface proteins isolated between 1997 and 2009 from the human population

Figure 1

Phylogenetic relationships of HA genes in H9N2 influenza viruses isolated from humans between 1997 and 2009. A phylogenetic tree was generated using minimum evolution analysis with maximum composite likelihood using the Tamura-Nei model with MEGA software version 4.0.2. Numbers below branches indicate bootstrap value percentages from 1000 replicates. The scale bar represents the distance unit between sequence pairs. Representative prototype viruses for different Eurasian lineages are indicated as red. The sequences of H9N2 influenza viruses isolated from the human population are indicated as blue.

Back to article page

Virology Journal

ISSN: 1743-422X