Researchers have coaxed stem cells to grow into amniotic sacs filled with fluid 1. The model sacs, which grew to roughly the ...

Treatment seems to have been effective, but it is not clear whether such bespoke therapies can be widely applied.

One of the most commonly used gene-delivery methods relies on engineered viruses to insert stretches of genetic material into a cell’s genome. Although effective, these viruses tend to insert their ...