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Morphology and cytotoxicity study of UBPLPs nanoparticles. (A) TEM images of UBPLP-Ser 1.2 nanoparticles. Inset is an image captured under higher magnification showing evenly dispersion of nanoparticles; (B) Evaluation of cytotoxicity of BPLPs and UBPLPs nanoparticle solutions at different dilution. PLGA nanoparticles were used as a control.
