Not Wanted

A Stanford University study suggests that, like organ transplants, human embryonic stem cells may come with a high probability of rejection. Joseph Wu and his colleagues injected hESCs into mice with compromised immune systems and into normal mice. The mice with compromised immune systems did well while the others died within 10 days. "[This result is] not a disappointment, it's more of a reality check," Wu says at sciam.com.

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A genomic analysis of modern and ancient maize reveals a complicated domestication history, according to Reuters.

In PLOS this week: MYRF variant linked to congenital diaphragmatic hernia, analysis of the "dragon's blood" red resin produced by traditional medicine plants, and more.

CNBC reports that half of academic researchers leave after about five years.

Researchers have used genetic analysis to confirm a new type of salamander, the New York Times reports.