Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2019 Dec 11;95(12):2921–2929. doi: 10.3382/ps/pew259

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2016 Poultry Science Association Inc.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

PMC Copyright notice

Phylogenetic analysis based on IBV strains nucleotide sequences of the full-length genome (a), S (b), S1 (c), E (d), M (e), and N (f) genes. The phylogenetic trees were constructed using the Neighbor-Joining method; bootstrap test (1,000 replicates) and Kimura-2 parameter method conducted in MEGA6. The bar represents the genetic distance of 0.01.