12597
Findings that xenogeneic serum promotes leukocyte-endothelium interaction possibly through NF-kappa B activation might be relevant for designing future therapeutic strategies aimed at prolonging xenograft survival .
 ( protein: NF-kappa B, 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: NF-kappa B, None) 