1516
These results identify TCF-1 as a T cell-specific transcription factor , which might play a role in the establishment of the mature T cell phenotype .
 protein: T cell-specific transcription factor; protein: TCF-1; cell type: mature T cell phenotype
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: T cell-specific transcription factor; protein: TCF-1; cell type: mature T cell phenotype