6905
OBJECTIVE: To create monoclonal anti-endothelial cell antibodies ( mAECA ) from a patient with Takayasu arteritis to evaluate their ability to activate human umbilical vein endothelial cells ( HUVEC ), and to characterize the mechanism of EC activation .
 ( cell line: HUVEC, None) , ( protein: mAECA, None) , ( cell line: human umbilical vein endothelial cells, None) , ( protein: monoclonal anti-endothelial cell antibodies, 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: HUVEC, None) , ( protein: mAECA, None) , ( cell line: human umbilical vein endothelial cells, None) , ( protein: monoclonal anti-endothelial cell antibodies, None) 