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Exposure of rats to arsenic caused also a significant increase in liver , kidney and testicular thiobarbituric acid reactive substances compared to control .
 Chemical: arsenic; Chemical: thiobarbituric acid
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: arsenic; Chemical: thiobarbituric acid