22857
Poly - lactide - co - glycolide ( PLGA ) microparticles emerged as one of the most promising strategies to achieve site - specific drug delivery .
 Chemical: Poly - lactide - co - glycolide; 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: Poly - lactide - co - glycolide, PLGA 
Answer:
 Chemical: Poly - lactide - co - glycolide; Chemical: PLGA