This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, 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: picture from RAM DAS NAYAK 2nd Ed. pg no.32 see the description image Standard histological stains for fungi are Grocott (methanmine) silver (GMS) stain or Periodic acid-Schiff (PAS). The GMS stain is more sensitive than the PAS stain, but has a signal to noise issue in that it stainsinflammatory cells (lysosomes) and tissue reticulin, in addition to fungi.', 'role': 'assistant'}]