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 ...

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

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

Biomedical engineer Nenad Bursac, standing, and postdoctoral associate Tianyu Wu image a heart tissue patch through a microscope at the Bursac lab at the Duke University Pratt School of Engineering.

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 ...