Related Experiment Video
Updated: Feb 8, 2026

Assessing Protein Interactions in Live-Cells with FRET-Sensitized Emission
Published on: April 22, 2021
Super-high sensitivity systems for detection and spectral analysis of ultraweak photon emission from biological cells
1Research Institute of Electrical Communication, Tohoku University, Sendai, Japan.
Abstract:
In this paper we summarize and discuss the modern technology and systems, studied and established by our research group, for performing the detection and special analysis incorporated with the super-high sensitivity photon counting method for the study of ultraweak photon emission; for example, extra-weak bioluminescence and chemiluminescence from living cells and tissues, closely related to biochemical and biophysical processes and activities. An excellent sensitivity of the basic photon counting system, making it possible to achieve count rates in the very low range of one photoelectron per second to one per minute, allowed us to carry out in vivo as well as in vitro measurements, and analyses of ultraweak bioluminescence and chemiluminescence. Recent results concerning ultraweak photon emission from blood samples and organ homogenates of rats are presented and reviewed as one of the interesting and valuable applications of our modern technology for studying ultraweak cell and tissue radiation.
Related Concept Videos
Emission Spectra
Biological Effects of Radiation
What is Conservation Biology?
Plant Cells and Tissues
Super-resolution Fluorescence Microscopy
Positron Emission Tomography
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...

