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(A) The interaction mechanism between polyanionic lipid nanoparticles and cell surface. (B) The colocalization between caveolin-1 and polyelectrolytes in Confocal Laser Scanning Microscopy observation; (C) Endothelial cells both in human and mouse show better uptake ability and HUVEC cells show highest caveolin-1 expression. Reprinted with the permission from Ref. 69. Copyright © 2014 freely available online through the PNAS open access option.
