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Functional roles of in vivo footprinted DNA motifs within an alpha-globin enhancer .
 DNA: in vivo footprinted DNA motifs; DNA: alpha-globin enhancer
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: in vivo footprinted DNA motifs, alpha-globin enhancer 
Answer:
 DNA: in vivo footprinted DNA motifs; DNA: alpha-globin enhancer