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Medical Term:

acridine orange

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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