Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Phylogenetic tree based on the NP coding-region sequences of FLUBV strains. Sequences from the present study and the reference ones are labelled according to the legend The reassortment event is red squared. Amino acid substitutions, relative to the reference sequence of B/YAM lineage, that define the genetic group B/Phuket/3073/2013, are labelled in blue.
