25779
Materials and methods : NGF microspheres were fabricated using polyethylene glycol ( PEG ) , ovalbumin ( OVA ) , bovine serum albumin ( BSA ) or glucose as protein protectors , and poly ( lactide - co - glycolide ) ( PLGA ) or poly ( lactic acid ) ( PLA ) / PLGA blends as encapsulation materials .
 Chemical: polyethylene glycol; Chemical: PEG; Chemical: glucose; Chemical: poly ( lactide - co - glycolide ); Chemical: PLGA; Chemical: poly ( lactic acid ); Chemical: PLA; 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: polyethylene glycol, PEG, glucose, poly ( lactide - co - glycolide ), PLGA, poly ( lactic acid ), PLA, PLGA 
Answer:
 Chemical: polyethylene glycol; Chemical: PEG; Chemical: glucose; Chemical: poly ( lactide - co - glycolide ); Chemical: PLGA; Chemical: poly ( lactic acid ); Chemical: PLA; Chemical: PLGA