5659
Both the wild type 430-444 and 433-442 peptides stimulated a HSV-specific T cell clone after a brief incubation with antigen presenting cells ( APC ) expressing DQ0302 at acidic pH .
 ( cell type: APC, None) , ( cell type: antigen presenting 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: APC, None) , ( cell type: antigen presenting cells, None) 