<prompt> Which of the following is not a feature of tuberculous pleural effusion?LDH 60 serum LDHAdenosine deaminaseWBC count 5000 - 10000Increased mesothelial cells  <response>: 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 mgdL. 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 2,000mL. Adenosin deaminase levels are higher 45 IUL for tuberculosis. Pleural fluid gamma-interferon 140 pgmL is also elevated. Positive polymerase chain reaction PCR is seen. 