Larry Swartz, a 72-year-old retired tool-and-die machine repairman, had severe PAD, known as critical limb ischemia.

WSJ: New Tactics to Treat Artery Disease That Harms Legs

The first study focused on a treatment for critical limb ischemia, or severe blockage in the arteries of the lower legs and feet of elderly patients.

FORBES: Researchers Highlight Warning Signs On Adult Stem Cell Treatments