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Tissue-specific regulation of the rabbit 15-lipoxygenase gene in erythroid cells by a transcriptional silencer .
 DNA: rabbit 15-lipoxygenase gene; cell type: erythroid cells; protein: 15-lipoxygenase; DNA: transcriptional silencer
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: rabbit 15-lipoxygenase gene; cell type: erythroid cells; protein: 15-lipoxygenase; DNA: transcriptional silencer