13070
As determined by tyrosine phosphorylation, nuclear translocation and binding to an hSIE-oligonucleotide probe , IL-2 and IL-15 activated the slowly migrating isoform, Stat3alpha .
 ( protein: IL-15, None) , ( protein: Stat3alpha, None) , ( protein: IL-2, 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: IL-15, None) , ( protein: Stat3alpha, None) , ( protein: IL-2, None) 