21178
This effect appeared to be due to both competition between S - nitrosocysteine and Prx1 for the Trx system and direct modulation by S - nitrosocysteine of Trx reductase activity .
 Chemical: S - nitrosocysteine; Chemical: S - nitrosocysteine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: S - nitrosocysteine, S - nitrosocysteine 
Answer:
 Chemical: S - nitrosocysteine; Chemical: S - nitrosocysteine