536
In addition, the use of IFN-U937 cells reduced interassay variation and simplified assay performance.
 cell line: IFN-U937 cells
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: IFN-U937 cells