2665
Retinoic acid downmodulates erythroid differentiation and GATA1 expression in purified adult-progenitor culture .
 GATA1, purified adult-progenitor culture
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:
 GATA1, purified adult-progenitor culture