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': 'Anti-nuclear antibodies are not found in: \nSelect and explain. \nA. SLE, B. Sarcoidosis, C. Diffuse Scleroderma, D. Drug induced lupus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANTI-NUCLEAR ANTIBODY Robbins 9th/218-19\n\nANAs are directed against several nuclear antigens and can be grouped into four categories:(l) antibodies\xa0to DNAP (2) antibodies to histones, (3) antibodies to nonhistone proteins bound to RNA, and (4)\xa0antibodies to nucleolar antigens.\nSeveral techniques are used to detect ANAs. Clinically the most commonly used method is indirect\xa0immunofluorescence, which detects a variety of nuclear antigens, including DNA, RNA, and proteins\xa0(collectively called generic ANAs).\n\nTable (Harrison): Antinuclear Antibody (ANA) Patterns and Clinical Associations', 'role': 'assistant'}]