6136
Combination chemotherapy using core - shell nanoparticles through the self - assembly of HPMA - based copolymers and degradable polyester .
 Chemical: HPMA; Chemical: polyester
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: HPMA; Chemical: polyester