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Taken together, our results suggest that OCA-B is a tissue- , promoter- , and factor- specific coactivator and that OCA-B may be a major determinant for B cell-specific activation of immunoglobulin promoters .
 protein: OCA-B; protein: OCA-B; DNA: immunoglobulin promoters
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: OCA-B; protein: OCA-B; DNA: immunoglobulin promoters