Fluorophore
（重定向自Fluorescent probes）
![A fluorophore-labeled human cell.](/Images/godic/202501/13/FISH_13_210125.jpg")
![Fluorescence of different substances under UV light. Green is a fluorescein, red is Rhodamine B, yellow is Rhodamine 6G, blue is quinine, purple is a mixture of quinine and rhodamine 6g. Solutions are about 0.001% concentration in water.](/Images/godic/202501/13/Fluorescence_rainbow0125.JPG")
![Bovine Pulmonary Artery Endothelial cell nuclei stained blue with DAPI, mitochondria stained red with MitoTracker Red CMXRos, and F-actin stained green with Alexa Fluor 488 phalloidin and imaged on a fluorescent microscope.](/Images/godic/202501/13/DAPIMitoTrackerRedAlexaFluor488BPAE0125.jpg"){kind=tracking}
A fluorophore (or fluorochrome, similarly to a chromophore) is a fluorescent chemical compound that can re-emit light upon light excitation. Fluorophores typically contain several combined aromatic groups, or plane or cyclic molecules with several π bonds.