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Moreover , bupivacaine significantly increased COX - 2 gene expression at 48 h as compared with the lidocaine / placebo group .
 Chemical: bupivacaine; Chemical: lidocaine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: bupivacaine; Chemical: lidocaine