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HT Histotechnician

Category - Staining

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The most commonly used fluorochrome to demonstrate DNA and RNA in fresh or fixed tissues is?

Janus green B
Acridine orange
Victoria blue
Night blue

Explanation

Answer: B - Acridine orange
The most commonly used fluorochrome to demonstrate DNA and RNA in fresh or fixed tissues is Acridine orange. RNA is stained brick to orange red while DNA emits a yellow-green fluorescence. Other choices are not commonly used to demonstrate RNA and DNA in tissue samples.

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