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A naloxone ( 5 mg / kg ) challenge was also ineffective in altering the seizure thresholds of either control of MSG - treated mice .
 Chemical: naloxone; Disease: seizure; Chemical: MSG
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: naloxone; Disease: seizure; Chemical: MSG