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Propidium iodide (or PI) is a fluorescent intercalating agent that can be used to stain cells.
P 4337 (OTTO) Propidium iodide, solution 1.0 mg/ml in water Cas 25535-16-4 - used in staining DNA. P 4337 (OTTO) Propidium iodide, solution 1.0 mg/ml in water - used to visualize F-actins and nuclei in mesenchymal stem cell sheets.