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Interestingly , Nox4 activity is also stimulated by reducing agents that possibly act by reducing the disulfide bridge ( Cys226 , Cys270 ) located in the extracellular E - loop of Nox4 .
 Chemical: disulfide; Chemical: Cys226; Chemical: Cys270
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: disulfide; Chemical: Cys226; Chemical: Cys270