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Bronchoalveolar lavage fluid ( BALF ) of rats exposed to SM ( 1 mg / kg , 50 minutes ) revealed a significant ( P < 0 . 05 ) increase in soluble Fas ligand and active caspase - 3 in BALF cells .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None