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 ...

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 ...

Other scientists are concerned and ethical questions linger over where the research on brain genes may lead. Scientists adding a human intelligence gene into monkeys - it's the kind of thing you'd see ...

Researchers have found that different parts of viral protein U expressed by simian immunodeficiency virus are required to bind to and block tetherin, an antiviral protein, in monkey cells versus in ...

Scientists have successfully used human stem cells to patch a hole in a monkey's retina, restoring the primate's vision and marking a successful step forward in the quest to treat age-related vision ...

Imagine pigs with human hearts or mice whose brains have a spark of human intelligence. Scientists are cultivating a flock of such experimental creations, called chimeras, by injecting potent human ...