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Present study clearly suggests that glial activation and post synaptic neurotoxicity are the key factors in STZ induced memory impairment and neuronal cell death .
 Disease: neurotoxicity; Chemical: STZ; Disease: memory impairment
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:
 Disease: neurotoxicity; Chemical: STZ; Disease: memory impairment