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.
Influenza virus H5 HA immunohistochemistry in ferrets initially infected with H1N1pdm09 (Mex/09) and then challenged with H5N1. At 18 days after challenge with H5N1, the small bowel lamina propria from two separate ferrets (A and B) and spleen white pulp (C) show occasional infected cells (red) in a distribution and frequency similar to those of infected cells observed with ISH. (Counterstained with hematoxylin.)
