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In this article , we review advances in nano - oncology , with an emphasis on breast and prostate cancer because these organs are amenable to the translation of nanomedicine from small animals to humans .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
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