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However, upon stable integration into chromatin , deletion of this region causes a nearly 90% decrease in promoter activity compared with expression from an alpha-globin promoter retaining this region.
 DNA: alpha-globin promoter; DNA: chromatin
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: alpha-globin promoter, chromatin 
Answer:
 DNA: alpha-globin promoter; DNA: chromatin