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HT Histotechnician

Category - Staining

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This is the oldest stain and was originally used for microscopic study of starch granules?

Methylene blue
Eosin
Iodine
Safranin

Explanation

Answer: C - Iodine
The oldest stain that was originally used for microscopic study of starch granules is Iodine. It stains amyloid, cellulose, starch, carotenes and glycogen. Gram’s iodine and Lugol’s iodine are two solutions of iodine that were used for the longest period of time.

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