14658
To elucidate the roles of individual GATA factors in erythropoiesis , conditional alleles of GATA-1 , GATA-2 , and GATA-3 were prepared by fusing each of the factors to the hormone-binding domain of the human estrogen receptor ( ER ).
 GATA-1, GATA factors, GATA-2, human estrogen receptor, hormone-binding domain, ER, GATA-3
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:
 GATA-1, GATA factors, GATA-2, human estrogen receptor, hormone-binding domain, ER, GATA-3