13439
Stimulation of resting human T cells with the CD28 -specific mAb BW 828 induces proliferation and cytokine synthesis without further requirement for TCR coengagement .
 ( protein: CD28, None) , ( protein: CD28 -specific mAb BW 828, None) , ( cell type: resting human T cells, None) , ( protein: TCR, None) , ( protein: cytokine, 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: CD28, None) , ( protein: CD28 -specific mAb BW 828, None) , ( cell type: resting human T cells, None) , ( protein: TCR, None) , ( protein: cytokine, None) 