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Immunohistochemistry on a panel of human tissues revealed that the TCF-1 protein was found exclusively in thymocytes and in CD3+ T cells in peripheral lymphoid tissues .
 cell type: T cells; protein: TCF-1 protein; cell line: CD3+ T cells; protein: TCF-1
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:
 cell type: T cells; protein: TCF-1 protein; cell line: CD3+ T cells; protein: TCF-1