505
The TCF-1 alpha binding site was also required for TCR alpha enhancer activity in transcriptionally active extracts from Jurkat but not HeLa cells , confirming that TCF-1 alpha is a T-cell-specific transcription factor .
 cell line: Jurkat; protein: TCF-1 alpha; protein: TCR; protein: TCF-1 alpha; protein: T-cell-specific transcription factor; DNA: TCF-1 alpha binding site; cell line: HeLa cells
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 line: Jurkat; protein: TCF-1 alpha; protein: TCR; protein: TCF-1 alpha; protein: T-cell-specific transcription factor; DNA: TCF-1 alpha binding site; cell line: HeLa cells