40
This result indicates the involvement of either a B-cell-specific cofactor or a specific modification of a cofactor or the Oct2 protein in Oct2 -mediated enhancer activation .
 protein: Oct2 protein; protein: Oct2; protein: B-cell-specific cofactor; protein: cofactor
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: Oct2; protein: B-cell-specific cofactor; protein: cofactor