1899
PGE2 enhanced the complex formation with NF-AT , AP-1 and CLE0 sequences when the cells were activated by either anti-CD3 mAb or PMA /A23187 stimulation .
 ( protein: PGE2, None) , ( protein: anti-CD3 mAb, 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: PGE2, None) , ( protein: anti-CD3 mAb, None) 