Look closer

Nikon has the results from its 2008 “Small World” Photomicrography competition.

People’s choice Chicken Embryo does simply amaze.

But I’m going to pick on these two pictures. They are very interesting, and also hard to guess. Can you work out what they are?

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Left: An anti-cancer drug. This is what your medicines look like close up.

Right: A mouse’s brain.

Follow the links (click on the images) for full descriptions