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.
Schematic illustration of ratiometric optical probes (PA probes, FL probes, BL probes, CL probes and afterglow probes) for biosensing such as sensing of pH, enzymes, ROS, RNS, GSH, metal ions, gas molecules, hypoxia factors and immunoassay.
