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The human T cell-specific transcription factor TCF-1 alpha plays a key role in the tissue-specific activation of the T cell receptor ( TCR ) C alpha enhancer and binds to pyrimidine -rich elements ( 5'-PyCTTTG-3' ) present in a variety of other T cell-specific control regions .
 DNA: T cell-specific control regions; protein: transcription factor; protein: T cell receptor; DNA: pyrimidine -rich elements; protein: TCF-1 alpha; protein: TCR; protein: human T cell-specific transcription 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: T cell-specific control regions; protein: transcription factor; protein: T cell receptor; DNA: pyrimidine -rich elements; protein: TCF-1 alpha; protein: TCR; protein: human T cell-specific transcription factor