12739
Except for a negligible cytotoxic activity of eGLs from early proliferative samples, cytotoxic activity of eGLs from non-pregnant endometrium during the menstrual cycle was comparable with those in peripheral blood, predominantly CD56+ CD16+ natural killer cells .
 ( cell type: CD56+ CD16+ natural killer cells, None) , ( cell type: eGLs, None) , ( cell type: eGLs, 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: CD56+ CD16+ natural killer cells, None) , ( cell type: eGLs, None) , ( cell type: eGLs, None) 