Zoology: Pig People: Neon_Sky_Pigs_68

Marc Moon, a cardiothoracic surgeon at Barnes-Jewish Hospital in St. Louis, prepares a pig heart valve to replace a faulty valve on a human patient. The American Heart Association estimates nearly 80,000 Americans have a porcine heart valve.

Marc Moon, a cardiothoracic surgeon at Barnes-Jewish Hospital in St. Louis, prepares a pig heart valve to replace a faulty valve on a human patient. The American Heart Association estimates nearly 80,000 Americans have a porcine heart valve.