7378
Previous studies have implicated activation of both protein kinase C ( PKC ) and protein tyrosine kinases ( PTK ) in LPS -induced NF-kappaB activation and TNF-alpha production .
 ( protein: NF-kappaB, None) , ( protein: protein tyrosine kinases, None) , ( protein: PTK, None) , ( protein: PKC, None) , ( protein: TNF-alpha, None) , ( protein: protein kinase C, 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-kappaB, None) , ( protein: protein tyrosine kinases, None) , ( protein: PTK, None) , ( protein: PKC, None) , ( protein: TNF-alpha, None) , ( protein: protein kinase C, None) 