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Bony bacteria

New species builds hard structures inside cells

Scientists have discovered skeletons in the cyanobacterial closet. A never-before-seen species of cyanobacterium loads its cells with little bonelike lumps that may act as ballast, helping to anchor the beastie in its home waters of a Mexican lake. The discovery, described in the April 27 Science, is the first report of such a microbe creating calcified structures inside its cells, rather than externally.

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