1174
The present work demonstrates that the glucocorticoid dexamethasone inhibits TPA -induced increases in c-jun and c-fos mRNA levels in U-937 leukemia cells .
 cell line: U-937 leukemia 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: U-937 leukemia cells