"Glowing mice: A fluorescent mouse family, provided by the Level Biotech, a transgenic company, is displayed inside a box during the Bio Taiwan 2003 at the World Trade Center in Taipei. The mice were implanted with the green fluorescent gene into the mice embryo combining genetic engineering and transplantion technology. (AFP/Sam Yeh)"
(However, I remain skeptical as to whether they actually look like this, or there is camera/lighting trickery involved. Have any of you ever see a glow-critter and a human in the same photo?)