29210
The system combines a caspase - 3 - based fluorescence resonance energy transfer ( FRET ) biosensor cell line which can detect endothelial cell apoptosis in real - time , post - treatment effect and with a limited cell sample , by using a microfluidic chip which can mimic the physiological pulsatile flow profile in the blood vessel .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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