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: Unknown
[{'content': 'Characteristic cell of granulomatous reaction is: \nSelect and explain. \nA. Epitheloid cell, B. Plasma cell, C. Lymphocyte, D. Eosinophil', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a (Epitheloid cell). (Ref. Robbins, Pathologic Basis of Disease, 6th/pg.204)Characteristic features of granulomatous reaction/inflammationa) Epithelioid cells (modified macrophages)b) Giant cells (Langhans, foreign body)c) Necrosis (caseation)d) Fibrosis', 'role': 'assistant'}]