This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'PAS stains the following except \nSelect and explain. \nA. Glycogen, B. Lipids, C. Fungal cell wall, D. Basement membrane of bacteria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref. Bancroft histopathology 5/e p204 PAS ( perodic acid Schiff) stain is versatile and has been used to stain many structures ,basement membrane ,glomeruli blood vessels and glycogen in the liver', 'role': 'assistant'}]