NucSpot Live Cell Nuclear Stains are cell-membrane permeable DNA dyes that specifically stain nuclei in live or fixed cells. They have excellent specificity for DNA without the need for a wash step, and they have low toxicity for live cell imaging. The dyes are supplied as 1000X stock solutions in DMSO, and are supplied with a vial of verapamil, which may increase probe retention and staining in some cell types. NucSpot Live 650 stains nuclei with far-red fluorescence and has an excitation/emission of 650/675 nm for detection in the Cy5 channel. Properties: Ex/Em= 650/675 nm; Store at 4°C and protect from light.