13468
Identification of upstream regulatory elements that repress expression of adult beta-like globin genes in a primitive erythroid environment .
 DNA: upstream regulatory elements; DNA: adult beta-like globin genes
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: upstream regulatory elements, adult beta-like globin genes 
Answer:
 DNA: upstream regulatory elements; DNA: adult beta-like globin genes