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.
Color scale applied to images captured in darkness after the addition of CSP‐a (calcium sensitive photoprotein aequorin). The black end of the scale represents a greyscale value of 0 and the white end of the scale represents the highest greyscale value of 150
