Surgeon Muhammad Mansoor Mohiuddin is a leader in the novel field of xenotransplantation—transferring organs from one species to another—in his case, from pigs to humans.

A grandmother on the brink of death received an experimental surgery earlier this month, getting a new heart valve and a ...

Pig heart valves have been used as replacements ... One of the added human genes causes the pigs to produce an immune system-moderating protein called CD46. More people need a kidney than any ...