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Transmission electron microscopy images of (A) CPEG-AuNPs, (B) MAP-AuNPs, and (C) TAP-AuNPs, (scale bar=20 nm), particle size distribution curves of (D) CPEG-AuNPs, (E) MAP-AuNPs, and (F) TAP-AuNPs, EDX spectra of (G) CPEG-AuNPs, (H) MAP-AuNPs, and (I) TAP-AuNPs.
Abbreviations: AuNP, gold nanoparticles; CPEG, citrate polyethylene glycol; EDX, energy dispersive X-ray; MAP, malate polyethylene glycol; TAP, tartrate polyethylene glycol.
