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
[{'content': 'All are complements of the basement membrane except \nSelect and explain. \nA. Nidogen, B. Laminin, C. Entactin, D. Rhodopsin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Basement membrane is periodic acid schiff (PAS) positive amorphous structures that lie underneath epithelia of different organs and endothelial cells .it consists of laminin ,proteoglycand ,collagenref Robbins 7/e p103 ,9/e p24', 'role': 'assistant'}]