Fig 12. The CD spectra of: free EGF (0.3 mg/mL), HAOA coated gold nanoparticles (without EGF), EGF-conjugated HAOA coated gold nanoparticles (16.5 μg/mL), non- conjugated EGF in supernatant, extracted by centrifugation, and EGF extracted after incubation of EGF-conjugated HAOA coated gold nanoparticles in phosphate buffer pH 5.5, at 37°C, for 72 hours.
