Researchers find that conserving marsupials on a predator-free island dampens their avoidance behaviors, which could mean trouble for their reintroduction to mainland Australia.
Drugs approved to treat rheumatoid arthritis block cytokines, the molecules responsible for severe side effects from the immunotherapy, and reduce symptoms in mice.
The first human experiment with neural precursor cells implanted to treat chronic spinal cord injury suggests the procedure is safe, and hints at a small benefit.
Researchers have been using ultrasound to control brain activity, but studies in mice and guinea pigs show it also stimulates the auditory system, presenting a confounder for direct neural stimulation.
The finding confirms that a cluster of cells that directs the fate of other cells in the developing embryo is evolutionarily conserved across the animal kingdom.
As the first personalized cell and gene therapies are approved from small clinical trials, researchers propose the creation of publicly accessible databases to pull together real-world results.
Analyses of more than 300 ancient human genomes show that Hepatitis B virus has infected humans for at least 4,500 years and has much older origins than modern viral genomes would suggest.
