This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Positive acid schiff macrophages seen in ? \nSelect and explain. \nA. Whipples disease, B. Crohns disease, C. AID, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The traditional laboratory diagnosis is based on light microscopy, which shows diastaseresistant, periodic acid-Schiff (PAS)-positive, non-acid-fast granules in ..... The distinction could be made by acid-fast staining, which is positive for patients infected with M. avium and negative for those with Whipple&;s disease. REF : HARRISONS 21ST ED', 'role': 'assistant'}]