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The aim of this work was to prepare L - DOPA loaded poly ( D , L - lactide - co - glycolide ) ( PLGA ) nanoparticles by a modified water - in - oil - in - water ( W ( 1 ) / O / W ( 2 ) ) emulsification solvent evaporation method .
 Chemical: L - DOPA; Chemical: poly ( D , L - lactide - co - glycolide ); Chemical: PLGA
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: L - DOPA; Chemical: poly ( D , L - lactide - co - glycolide ); Chemical: PLGA