Figure 1
From: Isolation and mutation trend analysis of influenza A virus subtype H9N2 in Egypt
Phylogenetic analysis of the PB1, PB2, PA, HA, NP, NA, M and NS genes of the A/chicken/Egypt/BSU-CU/2011 and selected H9N2 influenza A virux ses from the GenBank and EMBL databases. The strain isolated in the current study is indicated in red. The selected viruses were chosen to be representative of the relevant sequences in the GenBank and EMBL databases. The robustness of individual nodes of the tree was assessed using 1000 bootstrap replicates, and bootstrap values 70% and higher are indicated at key nodes.