5195
An element upstream from the human delta-globin-encoding gene specifically enhances beta-globin reporter gene expression in murine erythroleukemia cells .
 beta-globin reporter gene, element, murine erythroleukemia cells, human delta-globin-encoding gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 beta-globin reporter gene, element, murine erythroleukemia cells, human delta-globin-encoding gene