It seems like organized chaos. Five lab members move around a room the size of a galley kitchen. On this day, three high school students also squeeze into the medical lab, closely peering at a pig ...

MINNEAPOLIS -- Paul Iaizzo's Visible Heart Lab at the University of Minnesota hums with activity. Heart monitors, computer readouts, and a bank of 3D printers. Iaizzo's staff aren't racing to print ...

Stem cells have been used to grow an embryonic-like “heart” that can pump fluid around a system of tiny channels on a laboratory slide. The mini-heart could allow researchers to explore how physical ...