14922
CD4+ lymphocytes , at both polyclonal and clonal level, recognized peptide BCR1/25 in an HLA-DR --restricted fashion on presentation by autologous antigen-presenting cell ( APC ) or by APC expressing the HLA-DR11 restricting molecule .
 ( cell type: APC, None) , ( protein: HLA-DR11 restricting molecule, None) , ( cell type: CD4+ lymphocytes, None) , ( cell type: autologous antigen-presenting cell, None) , ( cell type: APC, None) , ( protein: HLA-DR, 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) , ( protein: HLA-DR11 restricting molecule, None) , ( cell type: CD4+ lymphocytes, None) , ( cell type: autologous antigen-presenting cell, None) , ( cell type: APC, None) , ( protein: HLA-DR, None) 