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OCA-B is a B-cell-specific coregulator of the broadly expressed POU domain transcription factor Oct-1 .
 OCA-B, B-cell-specific coregulator, Oct-1, POU domain transcription factor
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 OCA-B, B-cell-specific coregulator, Oct-1, POU domain transcription factor