References:

   
  1. Samuni A, et al. On the Cytotoxicity of Vitamin C and metal ions. Eur J Biochem. 1983;99:562.
  2. Jansson G. Harms-Ringdahl M. Stimulating effects of mercuric- and silver ions on the superoxide anion in human polymorphonuclear leukocytes. Free Radic Res Commun. 1993;18(2):87-98.
  3. Eichorn, GL, et al., “Interaction of Metal Ions with Biological Systems, with Special Reference to Silver and Gold,” Proceedings of the First International Conference on Gold and Silver In Medicine, Bethesda, MD, May 13-14, published by The Silver Institute, Washington, D.C., 1987; p. 4.
  4. Burrell RE, et al., Method of induction of apoptosis and inhibition of matrix metalloproteinases using antimicrobial metals. USPTO Number 7,001,617, 2006 Feb 21st.
  5. CRC Handbook of Chemistry and Physics, 80th Edition, ed. By David R. Lide, CRC Press, Boca Rotan, Fl, 1999-2000, Section 4, p. 27.