In the Dec. 9 SN: Lessons from the Pliocene, searching for new ways to fight MS, a supernova on repeat, the great gene drive debate, spider sleep secrets, an ailing boy gets new skin, kleptopredation and more.
STANDING OUT Scientists used to think that ribosomes, molecular machines that build proteins, are identical and interchangeable. But the micromachines are more diverse than previously thought, new research suggests.
PUMP IT UP A new type of CRISPR/Cas9-based gene therapy turned on muscle-building genes in mice that have muscular dystrophy. Muscle fibers (magenta) from mice that got the therapy (right) were bigger than fibers from untreated animals (left).
H.-K. Liao et al/Cell 2017
GOING VIRAL Genetic studies of viruses from horseshoe bats (shown) in one cave in China suggest the animals are reservoirs of SARS coronaviruses. Bats harbor many viruses that can sometimes infect people, including Ebola and Marburg.
Libiao Zhang/Guangdong Institute of Applied Biological Resource, China