This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Reye's syndrome is diagnosed by using with stain - 
Select and explain. 
A. Reticulin stain, B. Oil-red-0 stain, C. PAS stain, D. Mustein stain
B: Oil-red-0 stain
Answer: B: Oil-red-0 stain 
Explanation: Ans. is 'b' i.e., Oil red 0 Staino Read following 2 facts :?1. "Oil red 0 stain is used to stain fat".2. "Characteristic histopathologic change in the cells in Rey's syndrome is fat accumulation. Glycogen is completely absent from the cells ".These changes are seen in the cells of liver, brain & kidneys.o So after combining these 2 facts you can easily get the answer.o Now something more about stains