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Schematic illustration of the production process of TFENs and their sequential treatment against metastatic breast cancers. (A) Schematic diagram of the extraction and purification of TFENs. (B) Scheme of the transportation and therapeutic functions of TFENs, including the transportation of TFENs after i.v. injection and oral administration, increased oxidative stress, mitochondrial damage, cell cycle arrest, and cell apoptosis.
