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Here we report that LTB4 induces synthesis of interleukin (IL)-6 by human blood monocytes through transcriptional activation of the IL-6 gene .
 DNA: IL-6 gene; protein: interleukin (IL)-6; protein: IL-6; cell type: human blood monocytes
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:
 DNA: IL-6 gene; protein: interleukin (IL)-6; protein: IL-6; cell type: human blood monocytes