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Ginkgo extract synthesized silver nanoparticles (GB-AgNPs) induce apoptosis through caspase-dependent mitochondrial signalling pathways. Expression levels of apoptosis-related proteins were detected by western blot analysis after HeLa and SiHa cervical cancer cells were treated with the indicated concentrations of 40 nm GB-AgNPs. Data are expressed as the means ± SD; *P < 0.05, **P < 0.01.
