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
[{'content': 'Which of the following is used as fungal stain tissue biopsy sections? \nSelect and explain. \nA. PAS, B. Alizarin red, C. LPCB, D. Masson Trichrome', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., PAS", 'role': 'assistant'}]