11210
Using the yeast two-hybrid system to screen for proteins which interact with Tax1 , we isolated the B subunit of the CCAAT binding protein NF-Y from a HeLa cDNA library .
 HeLa cDNA library, NF-Y, Tax1, CCAAT binding protein, B subunit
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:
 HeLa cDNA library, NF-Y, Tax1, CCAAT binding protein, B subunit