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Emory University scientists have developed mammalian cells that produce magnetic nanoparticles to aid medical researchers in tracking cells, reports MIT's Tech Review. The scientists took a gene from pond bacteria that use small magnetic particles as a sort of compass and inserted it into mouse cells which then produced their own magnetic nanoparticles. When those mouse cells were inserted into a live mouse's brain, the cells could easily be seen on an MRI.

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The former commissioner of the FDA has returned to the venture capital firm New Enterprise Associates as a special partner on the healthcare investment team.

Astronauts have edited yeast genes on the International Space Station in an experiment designed to show how cells repair themselves in space.

Emory University has found that two of its researchers failed to divulge they had received funds from China, according to the Atlanta Journal-Constitution.

In Science this week: influence of the nuclear genome on human mitochondrial DNA, and more.