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.
a Background lung showing septal fibrosis with oedema and vascular congestion with alternating areas of aerated and collapsed lung (reprinted with permission from the European Resipratory Journal). b High power view showing intra-alveolar fibrin and a fibromyxoid plug with focal haemosiderin deposition
