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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Schematic representation of Extra- and Intracellular Barriers for nucleic acids delivery. (I)—Endo and exonuclease degradation; (II)—Interaction and binding with erythrocytes; (III)—Binding and aggregation via serum protein complexation; (IV)—Immune activation to delivered nucleic acids.