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In vivo footprint analysis of the HLA-DRA gene promoter : cell-specific interaction at the octamer site and up-regulation of X box binding by interferon gamma .
 protein: interferon gamma; DNA: octamer site; DNA: HLA-DRA gene promoter
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: interferon gamma; DNA: octamer site; DNA: HLA-DRA gene promoter