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In conclusion , the present study demonstrated that TFs inhibit peptide transport across Caco - 2 cell monolayers , probably through suppression of AMPK - mediated PEPT1 expression , which should be considered a new bioactivity of TFs in black tea .
 Chemical: TFs; Chemical: TFs
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: TFs; Chemical: TFs