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.
Maximum-clade-credibility tree depicting the inferred ancestry of 112 full-length sequences for N3 neuraminidase gene segments derived from influenza A viruses isolated from wild and domestic birds in North America. Posterior probability values >0.7 are reported. Grey bars indicate the 95 % HPD for the time of the most recent common ancestors. Sequences determined in this study are indicated in bold. The branch tip for A/pheasant/New Jersey/26996–2/2014 (H7N3) is colored red
