简介：DNAtetrahedralnanostructuresareconsideredtobenewnanocarriersbecausetheycanbepreciselycontrolledandholdexcellentpenetrationabilitytothecellularmembrane.AlthoughtheDNAtetrahedralnanostructureisextensivelystudiedinbiologyandmedicine,itsbehaviorinthecellswithnanoscaleresolutionisnotunderstoodclearly.Inthisletter,wedemonstratesuperresolutionfluorescenceimagingofthedistributionofDNAtetrahedralnanostructuresinthecellwithasimulatedemissiondepletion(STED)microscope,whichisbuiltbasedonaconventionalconfocalmicroscopeandcanprovidearesolutionof70nm.
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