1890
In cells stimulated with anti-CD3 mAb , PGE2 inhibited cell proliferation and the production of all the cytokines examined.
 ( protein: PGE2, None) , ( protein: cytokines, 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: cytokines, None) , ( protein: anti-CD3 mAb, None) 