1295
Gel mobility shift analyses reveal that FRTL - 5 thyroid cell nuclear extracts form a specific protein / DNA complex with this region , which is prevented by the TTF - 1 binding element from the TG promoter ; FRT and BRL cell nuclear extracts do not have TTF - 1 and do not form this complex .
 GENE: TTF - 1 binding element; GENE: TG promoter; GENE: TTF - 1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: TTF - 1 binding element; GENE: TG promoter; GENE: TTF - 1