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HT Histotechnician

Category - Staining

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This oil soluble dye has no secondary amino group, making it hard to stain phospholipids. What is this dye?

Sudan Black
Sudan III
Sudan IV
Oil Red O

Explanation

Answer: C - Sudan IV
Sudan IV is an oil soluble dye that has no secondary amino group, making it hard to stain phospholipids. It stains triglycerides deep and intense red. All the other choices have a secondary amino group and have no difficulty staining phospholipids.

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