1653
We have recently identified and cloned a human transcription factor , TCF-1 , that binds to a functional element in the T lymphocyte-specific enhancer of CD3-epsilon.
 protein: human transcription factor; 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:
 protein: human transcription factor; protein: TCF-1