The study began with induced heart attacks in macaque monkeys, effectively reducing their left ventricular ejection fraction (LVEF) to cause heart failure. LVEF describes how much blood the heart can ...

A dozen monkeys have been found dead in a forest in India - with veterinary experts claiming they suffered simultaneous heart attacks after they were scared by a tiger.

Medical researchers have restored the function of damaged hearts in macaque monkeys, using heart muscle cells derived from human embryonic stem cells. Now they want to do the same for humans. The ...

Injecting human cardiac muscle cells into monkeys that suffered heart attacks helped the animals’ damaged hearts pump blood better, researchers report July 2 in Nature Biotechnology. The treatment is ...