26874
This strong pro - inflammatory effect appeared to be dependent on the net imbalance of red - ox equilibrium with the production of excessive levels of reactive oxygen species through the colonic NADPH - oxidase NOX1 activation .
 Chemical: oxygen; Chemical: NADPH
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: oxygen, NADPH 
Answer:
 Chemical: oxygen; Chemical: NADPH