Both Ways

It's always been thought that while stem cells can give rise to all the different cells in the human body, once they become specialized, they stay specialized. Now, a new study done by researchers at the Whitehead Institute say they can actually go both ways, and that some specialized cells can spontaneously revert back to a stem-cell state, says Not Exactly Rocket Science's Ed Yong.

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The US Food and Drug Administration has new guidelines that enable some gene and cell therapies to undergo expedited review, according to the New York Times.

Using gene drives to control invasive species might be too risky, an initial advocate of the approach says.

Researchers have grown tumors in 3D cell cultures to better understand cancer, the Economist reports.

In Science this week: intellectual property experts argue patent battles such as the one over CRISPR are wasteful, and more.