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The present study demonstrates that AP-2 binding sequences are essential for increased transcription from the B2 promoter during monocyte-macrophage differentiation and that AP-2 , expressed exogenously in THP-1 and other cells, activates transcription from the B2 promoter .
 B2 promoter, AP-2 binding sequences, B2 promoter, AP-2, AP-2, THP-1
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:
 B2 promoter, AP-2 binding sequences, B2 promoter, AP-2, AP-2, THP-1