2496
To model effective versus ineffective CD3 -mediated stimulation in peripheral T cells , we used two anti-CD3 mAbs that differ in their ability to stimulate purified T cells : OKT3 , which causes early second messenger generation but is unable to activate T cells without a second signal, and 64.1 , which stimulates T cell proliferation on its own.
 ( protein: CD3, None) , ( cell type: purified T cells, None) , ( protein: 64.1, None) , ( cell type: peripheral T cells, None) , ( cell type: T cell, None) , ( cell type: T cells, None) , ( protein: anti-CD3 mAbs, None) , ( protein: OKT3, 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:
 ( protein: CD3, None) , ( cell type: purified T cells, None) , ( protein: 64.1, None) , ( cell type: peripheral T cells, None) , ( cell type: T cell, None) , ( cell type: T cells, None) , ( protein: anti-CD3 mAbs, None) , ( protein: OKT3, None) 