15696
ECH - induced apoptotic changes were evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling ( TUNEL ) assay and its related mechanism was confirmed by Western blot analysis and colorimetric assay .
 Chemical: ECH; Chemical: dUTP
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: ECH, dUTP 
Answer:
 Chemical: ECH; Chemical: dUTP