3768
In T- and B- cell lines , the E(gre) motifs were of major importance for Akv MLV transcriptional activity , while the EA/S motif had some effect.
 E(gre), EA/S motif, E(gre) motifs, EA/S
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:
 E(gre), EA/S motif, E(gre) motifs, EA/S