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In a study of cellular proteins involved in the transcriptional regulation of murine retroviruses in T lymphocytes , we have discovered that a member of the ets gene family encodes a sequence-specific DNA-binding protein .
 protein: cellular proteins; protein: sequence-specific DNA-binding protein; cell type: T lymphocytes; DNA: ets gene family
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: cellular proteins; protein: sequence-specific DNA-binding protein; cell type: T lymphocytes; DNA: ets gene family