"Red fluorescence" refers to the emission of a bright red color by an object or substance when it is exposed to certain types of light. Full definition
Fluorescent images of the mixture of prostate cancer C4 - 2B (red) and stromal HS - 5 (green) cells: (A) before, (B) after the first scan and (C) 60 s after the second scan, exposure to the pair of laser pulses (532 nm and 787 nm) that selectively generated cell damaging PNBs causing fading of red fluorescence due to leaking of red calcein out through the disrupted membrane. (thno.org)
The Sestrin 3 protein, labeled in red fluorescence and shown interacting with other proteins (highlighted in yellow) in the liver, may have implications in treating type 2 diabetes. (sciencedaily.com)
DsRed is the permanent fluorescent tag portion of Rosella: it will emit red fluorescence regardless of its localization in the cell. (blog.addgene.org)