This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'One of the following is a scavenger of cholesterol from tissue and prevents atherosclerosis - \nSelect and explain. \nA. VLDL, B. LDL, C. Chylomicrons, D. HDL', 'role': 'user'}, {'content': 'Answer: D \nExplanation: HDL\n\nThe HDL particles are referred to as scavengers because their primary role is to remove free (unesterified) cholesterol from the extrahepatic tissues.\nHDL particles transport cholesterol from extrahepatic tissues to liver (i.e. reverse cholesterol transport) which is then excreted through bile.', 'role': 'assistant'}]