Tribioscience’s Acridine Orange-Propidium Iodide (AO-PI) Stain is a cell viability dye mixture that causes viable nucleated cells to fluoresce green and nonviable nucleated cells to fluoresce red. AO-PI Stain can be used to assess cell viability with the automated fluorescence cell counters of the LUNA™ family. FEATURES Simplicity - There is no requirement for additional reagents. Safety - Non-radioactive assay. High throughput - No wash and cell transfer steps are involved during sample test procedures. Accuracy - Absorbance measurement is proportional to the number of cells in each well. APPLICATIONS, Cell proliferation, Drug reagents test, Growth factors, Cytotoxicity, Apoptosis