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We compared the parameters pleural adenosine deaminase ( PADA , determined in 405 patients ) , the PADA / serum ADA ratio ( P / SADA ; 276 cases ) , pleural lysozyme ( PLYS , 276 cases ) , the PLYS / serum LYS ratio ( P / SLYS ; 276 cases ) , and pleural interferon gamma ( IFN , 145 cases ) regarding their ability to differentiate tuberculous pleural effusions from others .
 pleural adenosine deaminase, PADA, PADA, serum ADA, P, SADA, pleural lysozyme, PLYS, PLYS, serum LYS, P, SLYS, pleural interferon gamma, IFN
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 pleural adenosine deaminase, PADA, PADA, serum ADA, P, SADA, pleural lysozyme, PLYS, PLYS, serum LYS, P, SLYS, pleural interferon gamma, IFN