Propidium iodide is a nucleic acid stain used in a flow cytometric DNA-content assay; ribonuclease A removes interfering RNA.[ref]
Cell Cycle Analysis by Propidium Iodide Staining by UCL Institute of Child Health Flow Cytometry Core Facility. Cell Cycle Analysis by Propidium Iodide Staining, p. 2, Procedure steps 6–9
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