27135
An optimized electrodropping system produces homogeneous core - shell microcapsules ( C - S MCs ) by using poly ( L - lactic - co - glycolic acid ) ( PLGA ) and alginate .
 poly ( L - lactic - co - glycolic acid ), PLGA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 poly ( L - lactic - co - glycolic acid ), PLGA