1744
We demonstrate in this report that the 5' flanking DNA of the 15-lox gene contains sequences which down-regulate its activity in a variety of non-erythroid cell lines but not in two erythroid cell lines .
 DNA: 15-lox gene; DNA: 5' flanking DNA; cell line: erythroid cell lines; cell line: non-erythroid cell lines
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: 15-lox gene; DNA: 5' flanking DNA; cell line: erythroid cell lines; cell line: non-erythroid cell lines