(Georgia Institute of Technology) Glowing pee may replace the biopsy needle: In detecting organ transplant rejection, a new nanoparticle has proven much faster and more thorough in the lab than a biopsy. When T cells mount their first attack on the organ’s cells the nanoparticle sends an alarm signal into the urine that makes it fluoresce.

Original source: https://www.eurekalert.org/pub_releases/2019-02/giot-fus021919.php