14440
We performed a combinatorial study to examine the effects of polymer chemistry and order of deposition of poly ( beta - amino ) esters on protein release kinetics under 81 LBL assembly conditions .
 Chemical: poly ( beta - amino ) esters
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: poly ( beta - amino ) esters