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': 'Inspissation is used for: \nSelect and explain. \nA. Sputum, B. Protein containing culture medium, C. Serum containing culture medium, D. Plasma sterilization', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Protein containing culture medium', 'role': 'assistant'}]