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: Microbiology
[{'content': 'Which of the following antibacterial substance is\npresent in eggs and saliva? \nSelect and explain. \nA. Lysozyme, B. Secretozyme, C. Albumin, D. Isozyme', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]