636
A statistically significant decrease in H2 O2 production by mitochondria was found in the presence of bilberry fruit extracts .
 Chemical: H2 O2
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: H2 O2 
Answer:
 Chemical: H2 O2