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': 'Russell body is found in- \nSelect and explain. \nA. WBC, B. RBC, C. Mast cells, D. Plasma cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer is D (Plasma cells) Russel bodies are intracytoplasmic inclusion bodies seen within plasma cells in patients with multiple myeloma.', 'role': 'assistant'}]