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.
Cultures were grown at different temperatures (14, 18 or 23 degrees Celsius). Some are from a limited silicon population (L) and some are from a non-limited silicon population of diatoms (NL).
