3745
Abnormalities of retinoblastoma protein ( pRB ) and mutations of RB gene have been reported in up to 70% of MM patients and 80% of MM-derived cell lines .
 ( protein: retinoblastoma protein, None) , ( cell line: MM-derived cell lines, None) , ( protein: pRB, 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: retinoblastoma protein, None) , ( cell line: MM-derived cell lines, None) , ( protein: pRB, None) 