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Following successful in vitro studies , locally injected silk hydrogels loaded with doxorubicin show excellent antitumor response in mice , outperforming the equivalent amount of doxorubicin delivered intravenously .
 Chemical: doxorubicin; Chemical: doxorubicin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: doxorubicin; Chemical: doxorubicin