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.
The capillary-alveolar unit in healthy and injured lung. (A) In the healthy lung, the intact capillary-alveolar unit (endothelium and epithelium) prevents the influx of immune cells and fluid into the interstitium and alveoli. (B) In the injured lung, disruption of the endothelial and epithelial barriers causes pulmonary edema, inflammatory cell recruitment (primarily polymorphonuclear leukocytes (PMNs)), and hypoxemia.
