Pronunciation: ak′ri-dēn ōr′enj
Definition: a basic fluorescent dye useful as a metachromatic stain for nucleic acids; also used in screening cervical smears for abnormal and malignant cells, where unusual amounts of DNA and RNA occur during proliferation and in tumors (DNA fluoresces yellow to green; RNA fluoresces orange to red).
Synonym(s): tetramethyl acridine
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Examples: glitazone, GI cocktail, etc.