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Western blots to analyze the presence of key proteins involved in cell apoptosis for MDA-MB-231 cells of white origin (A), SK-BR-3 cells (B), HCC1806 (C) and MDA-MB-468 cells of African-American origin (D) were run. Cleavage of a pro-apoptotic molecule BAX, which activates caspase-3, is implicated as the mechanism of VA extracts to induce apoptosis, compared to Tax.
