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.
Scanning electron micrographs (top view) of untreated (pictures on the left) and biodeposition-treated (pictures on the right) limestone. Note the presence of a newly formed layer of carbonate crystals on the surface of biodeposition-treated limestone.
