2834
Treatment with soluble, bivalent mAb J393 killed 25-50% of the cell population , while concomitant engagement of either the CD3.TcR complex or the integrins CD18 and CD29 significantly potentiated this effect.
 ( protein: CD18, None) , ( protein: mAb J393, None) , ( cell line: cell population, None) , ( protein: CD3.TcR complex, None) , ( protein: CD29, None) , ( protein: integrins, 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:
 ( protein: CD18, None) , ( protein: mAb J393, None) , ( cell line: cell population, None) , ( protein: CD3.TcR complex, None) , ( protein: CD29, None) , ( protein: integrins, None) 