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We investigated the molecular basis of the synergistic induction by interferon-gamma ( IFN-gamma )/ tumor necrosis factor-alpha ( TNF-alpha ) of human interleukin-6 (IL-6) gene in THP-1 monocytic cells , and compared it with the basis of this induction by lipopolysaccharide ( LPS ).
 protein: IFN-gamma; protein: TNF-alpha; protein: tumor necrosis factor-alpha; cell type: THP-1 monocytic cells; DNA: human interleukin-6 (IL-6) gene; protein: interferon-gamma
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: IFN-gamma; protein: TNF-alpha; protein: tumor necrosis factor-alpha; cell type: THP-1 monocytic cells; DNA: human interleukin-6 (IL-6) gene; protein: interferon-gamma