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.
Pathological analysis of the lung tissues of challenged BALB/c mice. The images were obtained on an OLYMPUS BX-50 light microscope with 40× magnification. (A) Lung tissues of mice challenged with A/California/04/2009 virus; (B) Lung tissues of mice challenged with A/California/07/2009 virus; (C) Lung tissues of mice challenged with mut-A/California/04/2009 virus; (D) Lung tissues of mice challenged with mut-A/California/07/2009 virus.
