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Schematic illustration of the mechanism of SARS-CoV-2 infectivity inhibition by the cellular nanosponges. Nanosponges have been prepared via wrapping the cores of polymeric NPs with the membranes of target cells including the macrophages and epithelial cells of the lungs. They inherited the antigen profiles of their source cells and served as decoys for binding to SARS-CoV-2 leading to the inhibition of virus entrance and infectivity. Adapted from Ref. [213].
