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Some evidence suggests that the LCR and the beta-globin promoter interact in adult erythroid cells , and the network of protein-protein interactions that exists between these two elements may regulate how EKLF is recruited to the LCR .
 adult erythroid cells, LCR, EKLF, LCR, beta-globin 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:
 adult erythroid cells, LCR, EKLF, LCR, beta-globin promoter