Fig. 1.
Schematic overview of the recombinant virus construction used in the present study. The nucleotide location was determined according to the IBV wild-type YN strain derived genome sequence.
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.