7073
Our aim was to optimize PLGA NP for SLP delivery with respect to encapsulation and release , using OVA24 , a 24 - residue long synthetic antigenic peptide covering a CTL epitope of ovalbumin ( SIINFEKL ) , as a model antigen .
 Chemical: PLGA
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: PLGA 
Answer:
 Chemical: PLGA