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Effect of shape on cellular uptake by RAW264.7 macrophages. (A) TEM images of spherical, cubic and rod Au NPs. (B) Characterization of ζ potential of Au-NPs after modification. (C) Cellular uptake of Au-NPs with different shape observed by CLSM. (D) Antibody production treated with different formulations. Reproduced with the permission from Ref. 128. Copyright © 2013 American Chemical Society.
