This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cellular Pathology, Subject name: Pathology
Stain used for tissue fats is? 
Select and explain. 
A. PAS, B. Prussian blue, C. Sudan IV, D. Alcian blue
C: Sudan IV
Answer: C: Sudan IV 
Explanation: Ans. is 'c' i.e., Sudan IV * Sudan IV or Oil Red-O are used for lipids both of which impart an orange color to the contained lipids. --Robbins