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: Medicine
[{'content': 'Which of the following is not a feature of tuberculous pleural effusion? \nSelect and explain. \nA. LDH > 60% serum LDH, B. Adenosine deaminase, C. WBC count 5000 - 10000, D. Increased mesothelial cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The effusion caused by post primary tuberculosis (TB) represents a delayed hypersensitivity reaction to spillage of organisms into the pleural space. The pleural fluid has the qualities of an exudates. The glucose concentration may be low (<60 mg/dL). pH of tuberculous effusion is below 7.2. Lymphocytes predominate and will be >50%. Mesothelial cells are scarce (<2%). The white cell count averages 5,000 to 2,000/mL. Adenosin deaminase levels are higher ( > 45 IU/L) for tuberculosis. Pleural fluid gamma-interferon (> 140 pg/mL) is also elevated. Positive polymerase chain reaction (PCR) is seen.', 'role': 'assistant'}]