Insulin, one of the defining medical triumphs of our age. This hormone regulates our bodies' use of sugar, and helps keep glucose levels safely in bounds.
It's also a lovely molecule. This 3D model of human insulin shows its exquisite trefoil structure (this is the T6 form), the protein chains, zinc ions and molecular surface all drawn accurately.
Data for this sculpture was kindly provided by Dr. G. David Smith, emeritus of the Hospital for Sick Children.
Laser etched glass