9050
Dendritic cells ( DC ) are potent APC during primary and secondary immune responses .
 ( cell type: APC, None) , ( cell type: Dendritic cells, None) , ( cell type: DC, 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: APC, None) , ( cell type: Dendritic cells, None) , ( cell type: DC, None) 