12847
Using the specific MAPK /extracellular signal-regulated kinase kinase (MAPK kinase) inhibitor PD98059 , we found that MAPK activation is necessary for FcR -dependent activation of the nuclear factor NF-kappaB .
 ( protein: MAPK, None) , ( protein: NF-kappaB, None) , ( protein: nuclear factor, None) , ( protein: MAPK, None) , ( protein: FcR, 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: MAPK, None) , ( protein: NF-kappaB, None) , ( protein: nuclear factor, None) , ( protein: MAPK, None) , ( protein: FcR, None) 