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: Physiology
[{'content': 'Clathrin is associated with which of the following functions? \nSelect and explain. \nA. Pinocytosis, B. Adhesion, C. Coagulation, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clathrin-mediated endocytosis occurs at membrane indentations where the protein clathrin accumulates. Pinocystosis is endocytosis known as \'cell drinking\'. Clathrin molecules have the shape of triskelions, with three "legs" radiating from a central hub. As endocytosis progresses, the clathrin molecules form a geometric array that surrounds the endocytotic vesicle. Ref: Ganong\'s Review of Medical Physiology 23rd edition, Chapter 2.', 'role': 'assistant'}]