13293
In the present study, we examined the ability of PtdIns 3-kinase to initiate the Rac-1 signaling pathways important for T cell activation .
 ( protein: Rac-1, None) , ( protein: PtdIns 3-kinase, 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: Rac-1, None) , ( protein: PtdIns 3-kinase, None) 