This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pathology
[{'content': 'Ferruginous bodies are seen in - \nSelect and explain. \nA. Silicosis, B. Bysinosis, C. Asbestosis, D. Baggassosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref:Textbook of pathology (Harsh mohan) 6th edition, page no.492 Histologically there is presence of characteristic asbestos bodies in the involved areas . These are asbestos fibres coated with glycoprotein and haemosiderin and appear beaded or dumbbell-shaped. The coating stains positively for Prussian blue reaction.', 'role': 'assistant'}]