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Additionally , we demonstrate that appropriate negative regulation of the Ras / protein kinase A pathway , along with an intact pyruvate dehydrogenase complex , is required for dieldrin tolerance .
 Chemical: pyruvate; Chemical: dieldrin
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: pyruvate; Chemical: dieldrin