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In the second experiment , four groups of mice received similar treatment in the first experiment , and 30 min after these injections , all mice received a higher dose of lidocaine ( 80 mg / kg ) .
 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: lidocaine