1537
Sequential measurements of cardiac output in surviving animals that received either free DOX or the mixture of HPMA copolymer and free DOX showed a reduction of approximately 30 % in function beginning at the 4th week after drug administration .
 Chemical: DOX; Chemical: HPMA; 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; Chemical: HPMA; Chemical: DOX