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Therefore , the most important finding of this study is to develop a novel endothelial cell apoptosis detection method , which combines the microfluidic chip system and FRET biosensor .
 None
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:  
Answer:
 None