CF dye-dUTP conjugates can be used for TUNEL assay, or to synthesize labeled DNA probes for in situ hybridization and nucleic acid blotting applications. The conjugates are labeled with CF dyes, Biotium's line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Blue fluorescent CF405S dye has an excitation/emission at 404/431 nm. Properties: Solid; Store dessicated -20°C, protect from light; Ex/Em= 404/431 nm.