508
Tandem AP-1-binding sites within the human beta-globin dominant control region function as an inducible enhancer in erythroid cells .
 DNA: human beta-globin dominant control region; cell type: erythroid cells; DNA: inducible enhancer; DNA: Tandem AP-1-binding sites
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:
 DNA: human beta-globin dominant control region; cell type: erythroid cells; DNA: inducible enhancer; DNA: Tandem AP-1-binding sites