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image: Out in the Cold

Out in the Cold

By | March 1, 2016

Serotonin’s long-debated role in sleep promotion is temperature-dependent.

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image: Sleep Circuit

Sleep Circuit

By | March 1, 2016

A web of cell types in one of the brain’s chief wake centers keeps animals up—but also puts them to sleep.

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image: What Lies Sleeping

What Lies Sleeping

By | March 1, 2016

Why can science still not define this most basic biological process?

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image: Characterizing Sleep

Characterizing Sleep

By and | March 1, 2016

Sleep-like patterns of neural activity are apparent not just at the level of the whole brain, but also in isolated neural circuits.

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image: Go To Bed!

Go To Bed!

By | March 1, 2016

The immediate consequences of losing out on sleep may be harbingers of long-term repercussions.

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image: Sleep’s Kernel

Sleep’s Kernel

By and | March 1, 2016

Surprisingly small sections of brain, and even neuronal and glial networks in a dish, display many electrical indicators of sleep.

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image: Week in Review: February 22–26

Week in Review: February 22–26

By | February 26, 2016

Questions about how E. coli evolves; spermatids in a dish; fighting bacteria with virus-like molecule; what drives metastasis; antibodies fight Ebola in monkeys

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image: Toward Making Sperm in the Lab

Toward Making Sperm in the Lab

By | February 25, 2016

Researchers devise a technique for creating gametes from murine embryonic stem cells.

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image: iPSCs and Cancer Risk

iPSCs and Cancer Risk

By | February 24, 2016

Reprogramming adult human cells into stem cells in vitro does not generate harmful mutations, scientists report.

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image: Insulin-Producing Mini Stomachs

Insulin-Producing Mini Stomachs

By | February 22, 2016

Scientists grow gastric organs in vitro that can restore insulin production when transplanted into mice.

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