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 likelihood tree of the F-gene of the class II genotype I Avian Paramyxovirus-1. Sub-genotype 1b and 1c are indicated and the Class II Genotype XI isolate HQ266604 was used as an outgroup. Viruses generated in this study are indicated in black circles. The scale bar indicates the number of substitutions per site.
