The Greek goddess Chimera, was a monstrous composition of disparate parts that embodied an ancient fear of females.

Scientists have discovered a method of helping human stem cells thrive in an animal embryo—a key development in efforts to grow human organs in animals for medical transplants. Subscribe to our ...

Scientists have advanced human-animal chimera research by successfully growing human cells within the organs of mice. This development could bring experts closer to the goal of custom-growing human ...