Figure 2.
(A) Zeta potentials of the nanoparticles at different fabrication stages: HPBNs, HPBNs@PAA, HPBNs@PAA/PAH and HPBNs@PAA/PAH/HA-g-PEG NPs. (B) UV/vis absorption spectrum of HPBNs@PAA/PAH/HA-g-PEG NPs.
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