810
In the present study, the proliferation of peripheral blood mononuclear cells ( PBMCs ) in response to mitogenic stimulation with phytohaemagglutinin ( PHA ) was assessed prospectively in 90 patients with stage I-III breast cancer .
 ( cell type: PBMCs, None) , ( protein: PHA, None) , ( protein: phytohaemagglutinin, None) , ( cell type: peripheral blood mononuclear cells, 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: PBMCs, None) , ( protein: PHA, None) , ( protein: phytohaemagglutinin, None) , ( cell type: peripheral blood mononuclear cells, None) 