18397
Except for serum superoxide dismutase levels , all other parameters differed significantly between the DOX plus NAC group and the DOX group .
 Chemical: superoxide; Chemical: DOX; Chemical: NAC; Chemical: DOX
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: superoxide; Chemical: DOX; Chemical: NAC; Chemical: DOX