Laboratory populations that quietly amass "cryptic" genetic variants are capable of surprising evolutionary leaps, according to a paper in the July 26 issue of Science. A better understanding of cryptic variation may improve directed evolution techniques for developing new biomolecules for medical and other applications.

The special exhibition brings together the beauty of Lake Baikal, the Sense river, the Iguazú Falls, the Ross Ice Shelf and many more places in far-flung corners of the world.

Following a stroke, antibodies that inhibit the signaling molecule Nogo-A can help repair blood vessels in the affected brain regions.

In multiple sclerosis (MS), dysregulated immune cells periodically infiltrate the brain of afflicted patients, causing damages to neural transmission and neuronal loss. If not properly monitored and treated, the disease leads to accumulating disabilities that ultimately greatly restrict the daily life of patients.

Similar to insulin in humans, plants also produce peptide hormones that orchestrate internal processes and responses, including growth, development, and immunity.

The more money there is in a lost wallet, the more likely it is to be returned to its owner, researchers from the Universities of Zurich, Michigan and Utah show in a global study.