4803
Although p45 mRNA is transcribed from two different promoters, aNF-E2 promoter and fNF-E2 promoter , in erythroid and megakaryocytic lineage cells , p45 mRNA is transcribed only from aNF-E2 promoter .
 p45 mRNA, fNF-E2 promoter, p45, p45 mRNA, p45, aNF-E2 promoter, aNF-E2 promoter
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:
 p45 mRNA, fNF-E2 promoter, p45, p45 mRNA, p45, aNF-E2 promoter, aNF-E2 promoter