PhenoVue™ Live/Dead Cell Viability Assay Kit enables the simultaneous determination of live and dead cells and is part of Revvity’s portfolio of cellular imaging reagents. Calcein AM dye is a cell permeable fluorescent dye which generates a bright green, fluorescent signal, whereas Propidium Iodide dye enters damaged cell membranes of dead cells and exhibits a bright red fluorescence. This assay kit provides an easy-to-use method for measuring cell proliferation, cell viability, cytotoxicity and apoptosis.