693
FTIR investigation confirmed that the L - DOPA and PLGA polymer maintained its backbone structure in the fabrication of nanoparticles .
 Chemical: L - DOPA; 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: PLGA