8308
We now find that cytokine-driven (granulocyte-macrophage CSF and TNF-alpha) CD34+ HPC -->DC differentiation is preferentially blocked by inhibitors of PKC activation .
 ( cell line: HPC, None) , ( protein: PKC, 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 line: HPC, None) , ( protein: PKC, None) 