3088
METHODS AND RESULTS : Two - week - old MHC - CB7 mice ( which express dominant - interfering p53 in cardiomyocytes ) and their non - transgenic ( NON - TXG ) littermates received weekly DOX injections for 5 weeks ( 25 mg / kg cumulative dose ) .
 Chemical: DOX
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: DOX