CellVue® dyes are lipophilic dyes that can be used to label the cell membrane for the purpose of identifying and tracking labeled cells. Cell labeling is rapid and stable and can be combined with fluorescently labeled antibodies and other markers of cellular function for flow cytometric analysis and fluorescent microscopy. Mini CellVue® Kits are supplied with one vial of dye stock (1 mM in ethanol) and one vial of labeling vehicle (Diluent C) Midi CellVue® Kits are supplied with two vials of dye stock (1 mM in ethanol) and six vials of Diluent C. CellVue® NIR815 is a near-infrared fluorescent cell labeling reagent. It is optimally excited at 786 nm and has a peak emission of 814 nm. CellVue® NIR815 has been reported to be useful for short-term in vivo cell tracking studies using a Pearl™ Imager or Odyssey Infrared Imaging System (Li-COR Biosciences, Inc., Lincoln, NE).