Electron micrograph pics

Does anyone know any decent sights for electron micrograph pictures?

No one? What do you mean what the hell's and electron microgrph picture? You know those pictures you sometimes see of lice close up, but only in one colour? That's most likely one of these. They're made with a powerful microscope and coloured in artificially. I've always loved these pictures but I don't know why. Sure they make people cringe and itch....look, you're itching now, but I want one as my wallpaper. So, if you happen to find any decent looking pictures or sites, then let me know.

Thanks