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HT Histotechnician

Category - Staining

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This type of stain is derived from certain Lichens which are normally colorless?

Orcein
Saffron
Cochnineal dye
Hematoxylin

Explanation

Answer: A - Orcein

Orcein is the type of stain that is derived from certain Lichens, which are normally colorless. Orcein is colorless, but when treated with Ammonia and is exposed to air, it produces blue and violet colors.

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