14699
In comparison to K562 , nucleated erythroblasts from adult human bone marrow exhibited a similar but nonidentical pattern of nuclear factor binding in vivo at the HS-40 region.
 HS-40, K562, nuclear factor, nucleated erythroblasts
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:
 HS-40, K562, nuclear factor, nucleated erythroblasts