7115
To investigate the effect of treatment with a pan anti gamma/delta antibody , lymphocytes were incubated for 3 hr with the antibody, and then interleukin (IL)-10 , IL-12 and progesterone -induced blocking factor ( PIBF ) expression (by immuno-cytochemistry ) as well as natural killer (NK) cell activity were determined.
 ( protein: anti gamma/delta antibody, None) , ( protein: IL-12, None) , ( protein: interleukin (IL)-10, None) , ( cell type: lymphocytes, None) , ( protein: PIBF, None) , ( cell type: natural killer (NK) cell, None) , ( protein: progesterone -induced blocking factor, 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: anti gamma/delta antibody, None) , ( protein: IL-12, None) , ( protein: interleukin (IL)-10, None) , ( cell type: lymphocytes, None) , ( protein: PIBF, None) , ( cell type: natural killer (NK) cell, None) , ( protein: progesterone -induced blocking factor, None) 