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: Pathology
[{'content': 'Phagocytosis was discovered by? \nSelect and explain. \nA. Elie Metchinkoff, B. Aulus Cornelius Celsus., C. RudolfVirchow, D. Emil Adolf von Behring', 'role': 'user'}, {'content': 'Answer: A \nExplanation: “The discovery ofphagocytosis by Elie Metchinkoff marks the birth of immunology”.', 'role': 'assistant'}]