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HT Histotechnician

Category - Staining

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This stain is best known as an indicator but can be used to stain axis cylinders in embryos?

Congo red
Crystal violet
Celestine blue
Neutral red

Explanation

Answer: A - Congo red

The stain best known as an indicator but can be used to stain axis cylinders in embryos is Congo red. In Krajan’s staining method, it is used as a 4% aqueous solution in staining elastic tissues, amyloid, and myelin. All the other choices are not known as an indicator and are used to stain axis cylinders in embryos.

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