Glow in a Row (image) Brown University Share Print E-Mail Caption Four tubes contain the ingredients that produce bioluminescence: Coelenterazine appears buoyant, swirling as it interacts with luciferase. The three tubes on the right also contain different colored fluorescent proteins attached to the luciferase which, as a result, emit cyan, green or yellow light. Credit Nathan Shaner Usage Restrictions with credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.