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Ketamine induces activation changes in healthy subjects similar to those observed in patients with schizophrenia , particularly in frontal and temporal brain regions .
 Chemical: Ketamine; Disease: schizophrenia
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: Ketamine; Disease: schizophrenia