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Morphological and histological examinations and terminal deoxynucleotidyl transferase dUTP nick end labeling ( TUNEL ) assays were performed .
 Chemical: deoxynucleotidyl; Chemical: dUTP
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: deoxynucleotidyl; Chemical: dUTP