Colleagues, a pathologist asked to use our Transmission Electron
Microscope(TEM) and when I was going to help him load his copper grids, he
said he would do it as it was a fecal preparation for viral studies.  I
found out that material on formar coated copper grids was not fixed. After
he viewed (no photos taken) I pulled the copper grid holder and all items
touched and ultrasonicated with absolute ethanol and then acetone and then
placed items without touching in a 70oC oven for an hour.  I feel that is
enough, but would like to know if anyone else has been in this predicament.
Thanks, Teresa