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sperm

A slice through the tails of mouse sperm.

Picture release: Spring tails

As spring arrives, flowers seem to bloom everywhere – even under the microscopes at the European Molecular Biology Laboratory (EMBL) in Heidelberg,…

By Guest author(s)

Picture of the week

In the centre, a structural model determined by X-ray crystallography shows how the two tags (attached to a short section of the histone protein – all in cyan) fit neatly into the Brdt pocket (purple). In the background image, hypercompaction by Brdt causes relatively diffuse chromatin (stained blue inside the nuclei of two cells on the top left) to compact and clump together (two on the bottom right).

Putting the squeeze on sperm DNA

In the quest for speed, olympic swimmers shave themselves or squeeze into high-tech super-suits. In the body, sperm are the only cells that swim and,…

By Guest author(s)

Science

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