13445
In contrast to the differential signaling of BW 828 and 9.3 in resting T cells, the two mAbs exhibited a similar pattern of early signaling events in activated T cells and Jurkat cells ( p56(lck) activation , association of phosphatidylinositol 3-kinase with CD28 ), indicating that the signaling capacity of CD28 changes with activation.
 ( protein: BW 828, None) , ( protein: CD28, None) , ( protein: 9.3, None) , ( protein: p56(lck), None) , ( protein: phosphatidylinositol 3-kinase, None) , ( cell type: Jurkat cells, None) , ( cell type: activated T cells, None) , ( protein: CD28, 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: BW 828, None) , ( protein: CD28, None) , ( protein: 9.3, None) , ( protein: p56(lck), None) , ( protein: phosphatidylinositol 3-kinase, None) , ( cell type: Jurkat cells, None) , ( cell type: activated T cells, None) , ( protein: CD28, None) 