Human heart cells have been coaxed into regenerating for the first time in a breakthrough that could mend failing organs.

A naturally occurring gene called Cyclin A2 (CCNA2), which turns off after birth in humans, can actually make new, functioning heart cells and help the heart repair itself from injury, including a ...

Researchers at Mount Sinai have identified the Cyclin A2 gene, which reactivates the human heart's natural healing ability.

During his regular checkup, a 9-year-old clouded leopard named Masala undergoes a procedure to get a tiny heart monitor implanted under his skin at the Smithsonian's Conservation Biology Institute in ...