FxCycle™ Far Red stain (F10348) is used for flow cytometric analysis of DNA content in fixed cells when combined with RNAse. This dye takes advantage of the commonly available 633⁄5 nm excitation sources with emission around 660 nm. With multicolor cell cycle studies possible using flow cytometry, it is often necessary to analyze DNA content on alternative lasers to preserve the common 488 nm laser and detection channels for other markers. Well suited for the popular red laser, FxCycle™ Far Red stain is a good choice for DNA content analysis in multicolor cell cycle studies.