“Our new model allows us to study living human heart tissue directly, something that hasn’t been possible before,” O’Hern told The Brighter Side of News. “By mixing macrophages into the organoids, our ...

Though an estimated 60 million people around the world have atrial fibrillation, or A-fib, a type of irregular and often fast heartbeat, it's been at least 30 years since any new treatments have been ...

Human heart development is largely influenced by neural crest cells, which carefully regulate a key growth signal.