14676
The physiologic relevance of this increase was demonstrated by the proliferative advantage provided by EC to PBL suboptimally stimulated with mAb OKT3 .
 ( cell type: PBL, None) , ( protein: mAb OKT3, None) , ( cell type: EC, 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: PBL, None) , ( protein: mAb OKT3, None) , ( cell type: EC, None) 