On a farm in the southern US state of Virginia, David Ayares and his research teams are breeding genetically modified pigs to transplant their organs into human patients. Revivicor, the biotech ...

“We get hundreds and hundreds of orders,” said David Ayares, who heads Revivicor Inc., as he opened a freezer jammed with packages of ground pork patties, ham, ribs and pork chops. The allergy ...