This Week in PNAS

In a paper appearing in this week's Early Edition, researchers at Johns Hopkins University School of Medicine and at the University of California, Irvine, show that deletion of Lhx2 in aging mice induces constitutive reactive gliosis, which then reduces "rates of ongoing apoptosis and compromised both rod and cone photoreceptor function." The Hopkins-Irvine team adds that these animals also "showed a dramatically reduced ability to induce expression of secreted neuroprotective factors and displayed enhanced rates of apoptosis in light-damage assays." Overall, the researchers say their study

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New results from the NASA Twins Study indicate that the immune system may rev up when in space, the Washington Post reports.

Kelvin Droegemeier, the new science advisor, spoke at the American Association for the Advancement of Science meeting, Geekwire reports.

In PNAS this week: whole-genome assembly for the white shark, paper-based microfluidic method for detecting the malaria parasite, and more.

The World Health Organization has announced the members of its gene-editing committee, according to NPR.