9859
All these events lead to excitotoxic neuronal death in the cerebral cortex , which was confirmed by the increased expression of caspase 3 , caspase 8 and BCL2 - associated X protein .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None