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Genes & Cells

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QUICK DRAW  Chemically reactive molecules called reactive oxygen species spur embryo cells to assemble a drawstring-like apparatus to close wounds, fruit fly research suggests.

mouse microglia

GUT IMPULSE Signals from gut microbes can activate immune cells called microglia (shown here in green) in the mouse brain, causing inflammation that’s characteristic of Parkinson’s disease.

silicon-based life illustration

FREAKY FUTURE Is silicon-based life (illustrated above) out there in the universe? The jury is still out — but with a little help from humans, life on Earth might be able to sprinkle a little silicon in with its carbon.

Genes & Cells

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