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.
The secondary structure of the PRRSV 3′ UTR predicted by Mfold: Location of the extra nucleotides in the type II virus were also shown in predicted secondary structure, the grey marked region is the highly variable region in type II PRRSV, the above region of the lines is conserved secondary structure in two type PRRSV, while the bottom region of the line is variable secondary structure. 1. A). type I, B). type II, C). 3URD40.
