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; cell line: MM-derived cell lines; protein: pRB
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: retinoblastoma protein, MM-derived cell lines, pRB 
Answer:
 protein: retinoblastoma protein; cell line: MM-derived cell lines; protein: pRB