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Heart mitochondria isolated from doxorubicin - treated rats exhibited depressed rates for state 3 respiration ( 336 + / - 26 versus 425 + / - 53 natom O / min / mg protein ) and a lower respiratory control ratio ( RCR ) ( 4 . 3 + / - 0 . 6 versus 5 . 8 + / - 0 . 4 ) compared with cardiac mitochondria isolated from saline - treated rats .
 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