520
Doxorubicin treatment also caused a decrease in RCR for liver mitochondria ( 3 . 9 + / - 0 . 9 versus 5 . 6 + / - 0 . 7 for control rats ) and inhibition of hepatic cytochrome oxidase activity .
 Chemical: Doxorubicin
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: Doxorubicin