731
These results are in striking contrast to the increase in nuclear NF kappa B and HIV-1 replication induced by phorbol esters in promonocytic leukemia cells U937 and HL-60 , and emphasize the importance of studying cytokine regulation of HIV-1 in normal monocytes .
 protein: NF kappa B; protein: cytokine; cell line: HL-60; cell type: normal monocytes; cell line: promonocytic leukemia cells 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:
 protein: NF kappa B; protein: cytokine; cell line: HL-60; cell type: normal monocytes; cell line: promonocytic leukemia cells U937