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Resonance Raman spectral imaging of intracellular uptake of beta - carotene loaded poly ( D , L - lactide - co - glycolide ) nanoparticles .
 Chemical: beta - carotene; Chemical: poly ( D , L - lactide - co - glycolide )
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: beta - carotene; Chemical: poly ( D , L - lactide - co - glycolide )