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.
Gross images of lung tumors promoted by GMA-SS welding fume 30 weeks after initiation with MCA. a Shows lung tumor morphology before fixation and b represents tumors 24 h post-fixation. Asterisks indicate areas of welding fume deposition and arrows indicate lung tumors. Most tumors were ~1 mm in diameter
