14851
T cells preincubated with phorbol 12-myristate 13-acetate ( PMA ) and dibutyryl cAMP ( Bt2cAMP ) displayed a deficient proliferative ability in response to anti-CD3 mAb stimulation , whereas lymphocytes treated individually with either Bt2cAMP or PMA responded comparably to untreated samples.
 ( cell type: lymphocytes, None) , ( cell type: T cells, 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:
 ( cell type: lymphocytes, None) , ( cell type: T cells, None) , ( protein: anti-CD3 mAb, None) 