In Vitro Evaluation of Colloidal Silver on Immune Function: Antilymphoproliferative Activity

Figure 1

Size distribution of colloidal silver. (a) DLS of colloidal silver dissolved in water showed an average size of 100 nm with a polydispersity index of 0.2. (b) DLS measurements of colloidal silver dissolved in cell culture medium with an average size of 155 nm and polydispersity index of 0.23. (c, d) SEM image of particles populations dissolved in water. (e, f) SEM image of colloidal silver dissolved in cell culture medium. (g, h) Histogram of particles dissolved in water and culture medium, respectively. (i) UV-vis spectra of colloidal silver. (j) Silver salts formed in samples of colloidal silver dissolved in culture medium. DLS, dynamic light scattering; SEM, scanning electron microscopy; and a.u., arbitrary units.