Ricki Lewis

We humans might not be able to regrow a leg, as can a cockroach or salamander, or regenerate a missing half, like a flatworm, but our organs can replenish themselves – thanks to stem cells. Two new reports about opposite ends of the respiratory system may pave the way for replacement breathing parts.

A 36-year-old  Read More 

According to a new review in The Lancet, when it comes to transplants from pigs, smaller is better. (“Clinical transplantation: the next medical revolution?” from David K. C. Cooper and colleagues at the Thomas E. Starzl Transplantation Institute of the University of Pittsburgh Medical Center.)

People have harbored pig parts for years, in the form of bladder linings, ligaments, and of course heart valves.  Read More