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: Medicine
[{'content': 'In renal biopsy specimen Jones methenamine silver stain is used for: \nSelect and explain. \nA. Assess cellularity and architecture, B. Stain carbohydrate moieties in the membranes of the glomerular tuft, C. Enhance basement membrane structure, D. Identify collagen deposition', 'role': 'user'}, {'content': "Answer: C \nExplanation: A renal biopsy quickly identifies the type of glomerular injury and suggests a course of treatment. The stains used in light microscopy specimen are: 1. Hematoxylin and eosin (H&E) to assess cellularity and architecture 2. Periodic acid-Schiff (PAS) to stain carbohydrate moieties in the membranes of the glomerular tuft and tubules 3. Jones-methenamine silver to enhance basement membrane structure 4. Congo red for amyloid deposits 5. Masson's trichrome to identify collagen deposition and assess the degree of glomerulosclerosis and interstitial fibrosis. Ref: Harrison-18, P-2339.", 'role': 'assistant'}]