10606
Activation of NF-kappa B in THP-1 cells by SP-A doses as low as 1 microgram/ml occurred within 30 min of SP-A treatment , peaked at 60 min, and then declined.
 ( protein: SP-A, None) , ( protein: SP-A, None) , ( protein: NF-kappa B, None) , ( cell line: THP-1 cells, 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: SP-A, None) , ( protein: SP-A, None) , ( protein: NF-kappa B, None) , ( cell line: THP-1 cells, None) 