13750
The role of H2O2 and other reactive oxygen species ( ROS ) as an integratory secondary messenger for divergent T cell signals has been complicated by the fact that various T cell lines and peripheral blood T cells differ markedly in the levels of NF-kappaB activation induced by oxidant stress.
 ( cell type: T cells, None) , ( protein: NF-kappaB, None) , ( cell line: T cell lines, None) , ( cell type: peripheral blood T 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:
 ( cell type: T cells, None) , ( protein: NF-kappaB, None) , ( cell line: T cell lines, None) , ( cell type: peripheral blood T cells, None) 