The term chimera is usually associated with Greek mythology. It brings to mind a monster with the head of a goat and a lion. Instead of a tail, it has a protruding snake. There is a genetic term that ...

“When I was in college, my mother needed a heart transplant,” said Mary Garry, a cell biologist at the University of Minnesota. Even though she was only in her fifties, Garry’s mother was told that ...