3172
In patients with breast cancer , NK cell activity was significantly higher compared with patients with benign tumors (P = 0.006) or healthy control subjects (P = 0.002).
 ( cell type: NK cell, None) , ( cell type: benign tumors, 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: NK cell, None) , ( cell type: benign tumors, None) 