5843
Here, we show that CD3 ligation by mAb and Staphylococcal enterotoxin (SE) induce a rapid, gradually accumulating, long-lasting tyrosine , and serine phosphorylation of Stat3 (but not Stat5 ) in allogen-specific human CD4+ T cell lines .
 ( protein: Stat3, None) , ( protein: Stat5, None) , ( cell line: allogen-specific human CD4+ T cell lines, 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: Stat3, None) , ( protein: Stat5, None) , ( cell line: allogen-specific human CD4+ T cell lines, None) 