14013
Neurochemical analyses were carried out on PN29 , with a particular focus on striatal alterations in intracellular signaling pathways ( MAPKs , Akt and DARPP - 32 ) , oxidative stress generation and cell death .
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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:
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