Which product stains fat?

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Study for the VTNE Laboratory Procedures Test. Use flashcards and multiple choice questions, each question offers hints and explanations, enabling increased understanding and retention. Prepare effectively for your exam!

Multiple Choice

Which product stains fat?

Explanation:
Staining fats relies on lipid-soluble dyes that partition into lipid droplets, making fats visible under the microscope. Sudan III and Sudan IV are classic lipid stains; they dissolve in fats and color neutral fats orange-red, so fat-rich tissues light up distinctly. The other stains are general cellular dyes: New methylene blue binds to acidic structures like nucleic acids and highlights nuclei and basophilic components, while Diff-Quik and Giemsa are Romanowsky-type stains designed to differentiate cell types in blood smears and cytology, emphasizing cytoplasm, nuclei, and bacteria rather than fats. So, for visualizing fat, the Sudan dyes are the best choice.

Staining fats relies on lipid-soluble dyes that partition into lipid droplets, making fats visible under the microscope. Sudan III and Sudan IV are classic lipid stains; they dissolve in fats and color neutral fats orange-red, so fat-rich tissues light up distinctly. The other stains are general cellular dyes: New methylene blue binds to acidic structures like nucleic acids and highlights nuclei and basophilic components, while Diff-Quik and Giemsa are Romanowsky-type stains designed to differentiate cell types in blood smears and cytology, emphasizing cytoplasm, nuclei, and bacteria rather than fats. So, for visualizing fat, the Sudan dyes are the best choice.

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