265
This was also true for KBF (p50 homodimer) binding activity in U937 cells .
 cell line: U937 cells; cell line: U937
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell line: U937 cells; cell line: U937