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, Lung shows the features of pulmonary capillary hemangiomatosis. B, Interstitial lymphocytic alveolitis is seen in a hematoxylin and eosin–stained section. C, Veno-occlusive changes of small venules are demonstrated by elastic stain. D, An arteriovenous malformation is highlighted by an elastic stain.
