13489
Moreover , the production of intracellular reactive oxygen species ( ROS ) elicited by AGE was also suppressed by catalpol treatment , through dual action of reducing ROS itself and inhibiting NADPH oxidase activity .
 Chemical: oxygen; Chemical: catalpol; Chemical: NADPH
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: oxygen; Chemical: catalpol; Chemical: NADPH