http://www.visions-of-science.co.uk/f-2005winners.htm
Got some dope images. Like....

This image of a peppercorn and a grain of salt taken by David McCarthy is the overall winner (and close-up category winner) in this year's Visions of Science Photographic Awards.
And

A clinical skills tutor holds a pile of prosthetic arms. The arms are used to help medical students learn valuable techniques, in this case the insertion of a cannula, a tube used for draining or introducing fluids.
And

Migraine attacks can cause a variety of visual symptoms (aura) as well as the notorious stabbing head pain. This is a representation of a barn seen during an attack, painted by an artist and migraine sufferer.