An official website of the United States government
Here’s how you know
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.
Hot on the heels of progress toward a liver transplant substitute, researchers have made transplantable lung grafts for rats. The accomplishment could pave the way for the development of an engineered human lung.