auramine

Auramine-rhodamine stain

The auramine-rhodamine stain (AR), also known as the Truant auramine-rhodamine stain, is a histological technique used to visualizee acid-fast bacilli using fluorescence microscopy, notably species in the Mycobacterium genus. Acid-fast organisms display a reddish-yellow fluorescence.

AR stain is a mixture of Auramine O and Rhodamine B.

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