14985
Our results are consistent with the view that the DNA-binding activity LEF1/BCF1 is a homodimer of E2A proteins ; the selective appearance of this putative cell-specific transcription factor in B lymphoid cells seems to be attributable, at least in part, to the elevated E2A protein concentrations in these cells.
 protein: LEF1/BCF1; protein: E2A protein; cell type: B lymphoid cells; protein: homodimer of E2A proteins
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: LEF1/BCF1, E2A protein, B lymphoid cells, homodimer of E2A proteins 
Answer:
 protein: LEF1/BCF1; protein: E2A protein; cell type: B lymphoid cells; protein: homodimer of E2A proteins