Human gametes develop within the body of the resultant organism; It contains a human brain or a brain derived wholly or predominantly from human neural tissues; or It exhibits human facial features or ...

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 ...

The guidelines do not call for a complete ban on human embryonic stem cell research resulting in chimeras. Rather, they allow for the creation of various chimeras contingent on review board approval.