5566
Using antigen peptide analogs with different mutations of known DQ2-anchor residues , T cell response was reduced in an peptide-affinity and - concentration specific manner .
 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:
 None