Fig. 1From: Gold Nanoparticles of Diameter 13 nm Induce Apoptosis in Rabbit Articular ChondrocytesCharacterization of AuNPs. a The size distribution of 3, 13, and 45 nm AuNPs by number. b, c The hydrodynamic diameters and zeta potentials of 3, 13, and 45 nm AuNPs (n = 3). d Photographic images and UV-vis spectra of 3, 13, and 45 nm AuNPs. e Color of 3, 13, and 45 nm AuNP solutionsBack to article page