Scientists are so adorable when they produce something stupefying and then reveal their over-enthusiastic muffin-like geekiness by giving it a really corny name:

Researchers at Harvard University have taken an important step to mapping the detailed architecture of the brain - the fantastically complex 3D atlas of connections between individual cells in the brains of mice. Using genetic tricks and flourescent proteins they have individually labeled hundreds of individual nerve cells with 90 different colour combinations. The end result they call a 'brainbow'.

Four more images, plus expalatory captions, at the Guardian's site.

References:
* Brainbow mice [Guardian]

Previously:
* Arnold Pouteau's View Of NYC Is Much Better Than Yours
* The Things We Can Do - Science Photography Awards Announced
* Underwater Photographer Having A Lot More Fun Than Us, Also Producing Gorgeous Photos