Electron microscopes can allow you see incredibly small things using a beam of electrons rather than a beam of light. They can provide incredibly fine detail, hence why many scientists use them to ...
Big and small: RUSH image of the brain of a live mouse. The coloured lines show the motions of labelled immune cells. The image is about 1 cm across. (Courtesy: Jingtao Fan et al/Nature Photonics) A ...
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