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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following stains are used for fat except?
assistant
The correct answer is  Ans. is 'b' i.e., Congo red * Congo red is not used in lipid staining. It is used in the staining of amyloid protein.* Stain used for lipids (fatty acids)are Oil red O, Osmium tetroxide, sudan black and sudan III & IV.