This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New Born Infants, Subject name: Pediatrics
[{'content': 'Henoch-Schonlein purpura is characterized by the deposition of the following immunoglobulin around the vessels: \nSelect and explain. \nA. IgM, B. IgG, C. IgA, D. IgE', 'role': 'user'}, {'content': "Answer: C \nExplanation: c. IgA(Ref: Nelson's 20/e p 1216-1217, Ghai 8/e p 632-633)Biopsy finding in HSP is deposition of IgA, specifically lgA1 in the affected tissue, by immunofluorescence, accompanied to a lesser extent by deposition of C3, fibrin & IgM.", 'role': 'assistant'}]