I've long been a big fan of Greek mythology and all the wondrous beasts that tested, and sometimes bested, mythical heroes. One such creature was the chimera, a grotesque hybrid of a lion, goat, and ...

Though they consulted bioethicists while completing their work, researchers have raised eyebrows by creating monkey-human chimeric embryos by injecting human stem cells into primate embryos. These ...

The NewsHour Science Unit looks at the debate over scientific research that involves transplanting human stem cells into animal brains. On the Caribbean Island of St. Kitts, these surgeons are ...

A few weeks ago, scientists reported successfully growing human cells in monkey embryos, paving the way for creating live human–monkey chimeras. For many, this could open the door to great medical ...

The Endless Frontiers Act, a comprehensive bill sponsored by Sen. Chuck Schumer, D-N.Y., passed the Senate on Friday, leading some critics to point to a little-noticed move that could open a ...

An article published April 15 in the journal Cell described how scientists took a blastocyst from a macaque and added human cells. A human-monkey chimeric blastocyst. Credit: Weizhi Ji/Kunming ...

Depending on your point of view, the creation of an embryo that is part-human and part-monkey is either a great opportunity for medical experts to create organs and tissues for human transplantation; ...

There are hundreds of different cell types that make up the human body, each derived from a single origin: the fertilized egg. Researchers investigating how this complexity arises have made ...

An intense debate has flared over whether the federal government should fund research that creates partly human creatures using human stem cells. The National Institutes of Health declared a ...

The Senate narrowly rejected an amendment geared toward criminalizing participation in research that created certain chimeras, or human-animal hybrids, in expectation that the federal government could ...

Dr. Jun Wu and associates of the Salk Institute have published a report on the successful growth of human stem cells in pig embryos. The project may have implications for transplant organ development, ...