14020
Encapsulation of Nod1 and Nod2 receptor ligands into poly ( lactic acid ) nanoparticles potentiates their immune properties .
 Chemical: poly ( lactic acid )
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 ( lactic acid )