12129
Interestingly, a correlation was observed between monoamine oxidase B enzyme activity in blood cells ( platelets ) and the binding pattern of two uncharacterized transcription factors .
 ( protein: transcription factors, None) , ( cell type: platelets, None) , ( protein: monoamine oxidase B, None) , ( cell type: blood 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:
 ( protein: transcription factors, None) , ( cell type: platelets, None) , ( protein: monoamine oxidase B, None) , ( cell type: blood cells, None) 