1408
Competition and supershift experiments indicate that Mono B contains a member of the polyomavirus enhancer-binding protein 2/core-binding factor ( PEBP2/CBF ) family, which includes the AML1 gene product, while Mono A is a distinct complex preferentially expressed in monocytic cells .
 ( protein: PEBP2/CBF, None) , ( cell type: monocytic cells, None) , ( protein: polyomavirus enhancer-binding protein 2/core-binding factor ( PEBP2/CBF ) family,, None) , ( protein: Mono B, None) , ( protein: Mono A, 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: PEBP2/CBF, None) , ( cell type: monocytic cells, None) , ( protein: polyomavirus enhancer-binding protein 2/core-binding factor ( PEBP2/CBF ) family,, None) , ( protein: Mono B, None) , ( protein: Mono A, None) 