Acridine orange (AO) stains dsDNA green (525 nm) and RNA or single stranded DNA red (650 nm).The dye is membrane-permeant and its nucleic acid binding property has been used for cell-cycle studies. Acridine orange has also been used for the detection of microorganisms in cerebrospinal fluid and other clinical...

Acridine Orange hydrochloride salt is a cell-permeable metachromatic fluorescent dye that stains DNA and RNA. It is used as a nucleic acid-selective fluorescent cationic dye useful for cell cycle determination and staining dead cells. Being cell-permeable, it interacts with DNA and RNA by intercalation or...