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HT Histotechnician

Category - Staining

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Which of the following vital stains is said to be dangerous and becomes toxic to the cells if the suspension stands for more than one hour?

Neutral red
Janus green
Trypan blue
Nile Blue

Explanation

Answer: C - Trypan blue

The vital stain that is said to be hazardous and becomes detrimental to the cells if the suspension sets for more than one hour is Trypan blue. The other vital stains mentioned above are not toxic to the cells even if the suspension stands for more than 1 hour.

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