17797
Apoptosis of cardiomyocytes was assessed by terminal dUTP nick - end labeling assay , and the expression of apoptosis - related proteins was observed by immunohistochemistry .
 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: dUTP 
Answer:
 Chemical: dUTP