4921
We have previously identified a new transcription factor family (the MNP family ) whose expression is crucial for the induction of MIP-1 alpha transcription during cellular activation and in transformed B cells .
 ( protein: MIP-1 alpha, None) , ( cell line: transformed B cells, None) , ( protein: transcription factor family, None) , ( protein: MNP family, 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: MIP-1 alpha, None) , ( cell line: transformed B cells, None) , ( protein: transcription factor family, None) , ( protein: MNP family, None) 