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Drug-empty CDNs self-assemble into nanoparticles. (A) Table displaying the mean size, PDI, and ζ-potential for drug-empty nanoparticles formed by CDNs 1–4. (B) SEM image of representative Amine-CDN-3. (C) SEM image of representative CDN-4, which bears mPEG550 surface functionality. Scale bars = 1 μm. Errors are reported as standard deviations of at least three independently formulated batches.
