Since some readers on this list are experimenters, I thought I would post the following news release:
Scientists establish link between autoimmune diseases and nanoparticles http://www.news-medical.net/news/20120612/Scientists-establish-link-between-autoimmune-diseases-and-nanoparticles.aspx There have been several other studies demonstrating the possible dangers of casual handling of nanopowders. Caution is in order.

