1014
Finally , we quantified both nuclear and mitochondrial DNA ( mtDNA ) as well as superoxide production and the 4834 base pair ' common ' mtDNA deletion .
 Chemical: superoxide
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:
 Chemical: superoxide