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Frequently asked questions about vitamin B12 Vitamin B12 contributes to normal energy metabolism, supports normal nervous system function, supports normal psychological function, and helps reduce tiredness and fatigue

PLoS One (2013) 8(11):e79167

These include concerns regarding the long-term safety of gene modifications, challenges in the mass production of gene drugs, difficulties in controlling gene expression in vivo, limitations in achieving stable and long-term expression of foreign genes in vivo, low efficiency of targeted gene transfer, alterations in the biological properties of target cells, and ethical considerations

Others need optimization to higher doses for best results

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