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These nitriles are widely used in consumer products however there is very limited data in the literature regarding the genotoxicity of these nitriles .
 Chemical: nitriles; Chemical: nitriles
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: nitriles; Chemical: nitriles