27720
Fluorescein isothiocyanate ( FITC ) , a fluorescent probe , is coupled to amphiphilic monomethoxy poly ( ethylene glycol ) - block - poly ( epsilon - caprolactone ) ( mPEG - PCL ) copolymers .
 Chemical: Fluorescein isothiocyanate; Chemical: FITC; Chemical: monomethoxy poly ( ethylene glycol ) - block - poly ( epsilon - caprolactone ); Chemical: mPEG - PCL
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: Fluorescein isothiocyanate, FITC, monomethoxy poly ( ethylene glycol ) - block - poly ( epsilon - caprolactone ), mPEG - PCL 
Answer:
 Chemical: Fluorescein isothiocyanate; Chemical: FITC; Chemical: monomethoxy poly ( ethylene glycol ) - block - poly ( epsilon - caprolactone ); Chemical: mPEG - PCL