6937
Finally, PPARalpha activators significantly reduced adhesion of U937 cells to cultured human ECs .
 ( cell line: U937 cells, None) , ( protein: PPARalpha, None) , ( cell type: cultured human ECs, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell line: U937 cells, None) , ( protein: PPARalpha, None) , ( cell type: cultured human ECs, None) 