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In this study, we generated transgenic mice carrying the human IRF-1 gene linked to the human immunoglobulin heavy-chain enhancer .
 protein: human immunoglobulin heavy-chain; DNA: human immunoglobulin heavy-chain enhancer; protein: IRF-1; DNA: human IRF-1 gene
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: human immunoglobulin heavy-chain; DNA: human immunoglobulin heavy-chain enhancer; protein: IRF-1; DNA: human IRF-1 gene