1509
B cell-specific transcriptional promoter activity mediated by the octamer motif requires the Oct1 or Oct2 protein and additional B cell-restricted cofactors .
 protein: Oct2 protein; protein: Oct1; DNA: octamer motif; protein: B cell-restricted cofactors
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: Oct2 protein; protein: Oct1; DNA: octamer motif; protein: B cell-restricted cofactors