6013
Immune induction is effected through the interaction of antigen-presenting cells with specific receptors on the surface of thymus-derived lymphocytes .
 ( cell type: thymus-derived lymphocytes, None) , ( cell type: lymphocytes, None) , ( cell type: antigen-presenting cells, None) , ( protein: receptors, 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: thymus-derived lymphocytes, None) , ( cell type: lymphocytes, None) , ( cell type: antigen-presenting cells, None) , ( protein: receptors, None) 