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.
Examples of evaluation of staining on the lung surface. Photographs show (A) the extensive staining (score 1), (B) localized dispersion of staining (score 2), and (C) minimal dispersion of staining (score 3). The white lines on the bottom of the figure are markings of the ruler. The distance between two lines is one centimeter.
