16592
We found that atorvastatin withdrawal decreased levels of nitric oxide and mitochondrial superoxide dismutase activity , whereas increased NADPH oxidase activity and immunoreactivity for the protein nitration marker 3 - nitrotyrosine in the cerebral cortex .
 Chemical: atorvastatin; Chemical: nitric oxide; Chemical: superoxide; Chemical: NADPH; Chemical: 3 - nitrotyrosine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: atorvastatin; Chemical: nitric oxide; Chemical: superoxide; Chemical: NADPH; Chemical: 3 - nitrotyrosine