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.
Small intestine of a ferret with confirmed FRSCV infection. Note pyogranulomatous peritonitis and positive labeling of macrophages (red) with antibody directed against alphacoronavirus antigen. Alkaline phosphatase red chromogen, hematoxylin counterstain, Bar = 200 μm.
