24969
The anti - cancer drug , doxorubicin ( DOX ) , is further loaded on the surface of SWNTs at a very high loading efficiency , 149 . 3 +/- 4 . 1 % .
 Chemical: doxorubicin; Chemical: DOX
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: DOX