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.
 lymphocytes, T cells, anti-CD3 mAb
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 lymphocytes, T cells, anti-CD3 mAb