Medicine

UK researchers are growing the Delta variant for human challenge trials
A blood test for your circadian clock
One antibody stops all strains of COVID-19 from infecting cells 
Antibody cocktail highly effective at preventing COVID-19
Tiny magnetic beads and turkeys may lead to better prosthetic limbs
Brain-wide gene editing may one day treat Alzheimer’s
Researchers have 3D-printed an active tumor
MIT has created an inflatable prosthetic hand
Wasps inspire a new surgical needle
New organ coating could help prevent transplant rejection