This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Auto Immune Disorders Introduction, Subject name: Pathology
[{'content': 'Immune privilege site is: \nSelect and explain. \nA. Optic nerve, B. Seminiferous tubule, C. Area posterna, D. Spinal cord', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Immune privilege sites are: Brain - pa that lies within the BBB. Area postrema lies outside BBB Eye - Cornea and retinal pigment epithelium Testis - Seminiferous tubules Exposure of immune privilege site to body tissues leads to damage of the organ involved(brain eyes testis ). This forms the pathophysiology for sympathetic ophthalmitis', 'role': 'assistant'}]