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TCF-1 alpha , originally identified and purified through its binding sites on the HIV-1 promoter , was found to bind to the TCR alpha enhancer and to promoters for several genes expressed at significantly earlier stages of T-cell development than the TCR alpha gene (e.g., p56lck and CD3 delta ).
 protein: TCR; protein: TCR; DNA: genes; DNA: CD3 delta; DNA: p56lck; DNA: HIV-1 promoter; DNA: promoters; DNA: TCR alpha enhancer; protein: TCF-1 alpha; DNA: TCR alpha 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: TCR; protein: TCR; DNA: genes; DNA: CD3 delta; DNA: p56lck; DNA: HIV-1 promoter; DNA: promoters; DNA: TCR alpha enhancer; protein: TCF-1 alpha; DNA: TCR alpha gene