Here’s what you’ll learn when you read this story: The word “chimera” usually evokes images of mythological, multi-headed beasts, but the term also comes with more modern, scientific connotations. For ...

In a New York operating room one day in October 2025, doctors made medical history by transplanting a genetically modified pig kidney into a living patient as part of a clinical trial. The kidney had ...

In a scientific “first,” a tiny heart structure composed of human cells has been successfully grown within a pig embryo. Interestingly, this heart kept beating on its own for an impressive 21 days.

While research on human-pig chimeras is on an indefinite pause, xenotransplantation is moving ahead. wildpixel/iStock via Getty Images Plus In a New York operating room one day in October 2025, ...

Here’s what you’ll learn when you read this story: With more than 100,000 people in need of an organ transplant in the U.S. alone, scientists have turned toward perfecting human-animal chimeras as a ...