8378
Purified human peripheral T cells or Jurkat T cells were stimulated with Chinese hamster ovary (CHO) cells expressing either human CD80 ( CHO-CD80 ) or human CD86 ( CHO-CD86 ) or with anti- CD28 monoclonal antibody (mAb).
 ( cell line: Purified human peripheral T cells, None) , ( cell line: Jurkat T cells, None) , ( protein: human CD86, None) , ( protein: CHO-CD80, None) , ( protein: anti- CD28 monoclonal antibody, None) , ( protein: CD28, None) , ( protein: CD80, None) , ( protein: human CD80, None) , ( protein: CHO-CD86, 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 line: Purified human peripheral T cells, None) , ( cell line: Jurkat T cells, None) , ( protein: human CD86, None) , ( protein: CHO-CD80, None) , ( protein: anti- CD28 monoclonal antibody, None) , ( protein: CD28, None) , ( protein: CD80, None) , ( protein: human CD80, None) , ( protein: CHO-CD86, None) 