This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Anti ds DNA antibiodies are commonly seen in 
Select and explain. 
A. SLE, B. Scleroderma, C. Dermatomyositis, D. Rheumatoid ahritis
A: SLE
Answer: A: SLE 
Explanation: Antibiodies to do DNA and the so called Smith antigens are viually diagnostic of SLE .Anti ds-,DNA is common in SLE (40-60%,) ref Robbins 9/e p 128