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: Microbiology
Stain used to detect degenerated fungi in tissues 
Select and explain. 
A. PAS, B. Lactophenol Cotton blue, C. Calcoflour white, D. Alcian blue
A: PAS
Answer: A: PAS 
Explanation: PAS (Periodic acid schiff) & GMS (Gomori methanamine silver) is used to detect degenerated fungi in tissues.