| With transfected cells grown as solid tumors in vivo, the bioluminescence light is emitted shortly after systemic administration of luciferin. |
| Luc activity was assayed quantitatively with a liquid scintillator using the photon-counting mode after the feeding of luciferin as substrate. |
| Luciferase creates light in combination with oxygen, a molecule called luciferin and adenosine triphosphate, a substance found in all living cells. |
| In most bioluminescent organisms, the essential light-emitting components are the oxidizable organic molecule luciferin and the enzyme luciferase, which are specific for different organisms. |
| A firefly's light is produced by a chemical reaction involving a special protein, a pigment called luciferin, and oxygen. |
| When the pH drops, luciferase changes its shape, allowing luciferin, more specifically tetrapyrrole, to bind. |
