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Identification of a novel factor that interacts with an immunoglobulin heavy-chain promoter and stimulates transcription in conjunction with the lymphoid cell-specific factor OTF2 .
 DNA: immunoglobulin heavy-chain promoter; protein: lymphoid cell-specific factor; protein: OTF2; protein: novel factor
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: immunoglobulin heavy-chain promoter; protein: lymphoid cell-specific factor; protein: OTF2; protein: novel factor