8595
This makes the identification of genetic targets for this transcription factor pertinent for the understanding of early B-cell development .
 protein: transcription factor
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: transcription factor 
Answer:
 protein: transcription factor