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Toxins of Escherichia coli ( STEC ) causing Uremic Hemolytic Syndrome ( UHS ) generate oxidative stress in human blood with more production of nitric oxide ( NO ) than reactive oxygen species ( ROS ) .
 Chemical: nitric oxide; Chemical: NO; Chemical: oxygen
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: nitric oxide; Chemical: NO; Chemical: oxygen