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TGF beta 1 expression is largely governed by three AP - 1 binding sites located in two different promoters of this gene .
 GENE: TGF beta 1; GENE: AP - 1 binding sites
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: TGF beta 1; GENE: AP - 1 binding sites