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Theaflavin-3,3′-digallate (TF3) selectively reduced the viability of ovarian cancer cells. (A) Chemical structure of TF3. (B) The viability of human ovarian carcinoma (OVCAR-3) cells and normal human immortalized ovarian surface epithelial cells (IOSE 364) cells exposed to TF3. * p < 0.05 compared with the control group.
