2438
OBJECTIVE : Diabetic nephropathy is one of the major causes of renal failure , which is accompanied by the production of reactive oxygen species ( ROS ) .
 Disease: Diabetic nephropathy; Disease: renal failure; Chemical: oxygen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: Diabetic nephropathy; Disease: renal failure; Chemical: oxygen