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Effect of serum (FBS) on siRNA delivery efficiency in Ha and Ep cells. siRNA and FNP were incubated in a cell culture medium containing 5% FBS during siRNA delivery in vitro. For non-FBS cell groups, siRNA and FNP were incubated in a cell culture medium without FBS. siRNA delivery efficiency between FBS and non-FBS cell groups was not significantly different. The delivery efficiency was calculated as the percentage of fluorescent cells to total cells.
