Fig. 4From: Protein corona: implications for nanoparticle interactions with pulmonary cells a Transmission electron micrograph of citrate-coated Au NPs. b UV-vis spectra of citrate-coated Au NPs in water (black curve) and albumin-coated Au NPs in PBS (red curve). The Au NPs show a red-shift in the peak absorbance wavelength after albumin coatingBack to article page