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The role of sorbitol in increased DNJ production was supported by an observed increase in mRNA expression of the biosynthetic gene , gabT1 .
 Chemical: sorbitol; Chemical: DNJ
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: sorbitol; Chemical: DNJ