This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunity, Subject name: Pathology
[{'content': 'Band test is done in: \nSelect and explain. \nA. RA, B. SLE, C. Scleroderma, D. PAN', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) SLE(Ref: Dubois' Lupus Erythematosus pg 542)Lupus Band testA diagnostic procedure used to detect deposits of immunoglobulins and complement components along the dermo-epidermal junction in patients with SLE & cutaneous lupusIt is positive in about 70%-80% of sun-exposed & 55% of sun-protected non-lesional skin specimens obtained from patients with SLE", 'role': 'assistant'}]