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SAN regulates VEGF release from MCF-7 cells. Effects of increasing concentrations of SAN (a), H2O2 (b), and NAC (c) on cell viability (MTT test) and VEGF release in MCF-7 cultures. Each histogram is the mean ± SD of three independent experiments performed in quadruplicate. “nd” was not detectable. Compared with normal group, *P < 0.05, **P < 0.01.
