Pat  believed you would be interested in the following page from the Royal 
Society of Chemistry website:

The toxic effect of silver ions and silver nanoparticles towards bacteria and 
human cells occurs in the same concentration range-

http://pubs.rsc.org/en/content/articlelanding/2012/ra/c2ra20684f

Please note that some areas of the website require a login and password

Message:Interesting article.


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